Selling FMCG products online has become one of the most accessible routes into self-employment in the UK. The structure is straightforward: buy in bulk at wholesale prices, sell individually on a marketplace or your own website, and keep the margin. Thousands of UK sellers are doing exactly this, across Amazon, eBay, Shopify, and a mix of all three, and many of them are doing it with household goods, toiletries, personal care products, candles, and air fresheners sourced from UK wholesale suppliers.

The model works because FMCG products have a set of characteristics that suit online selling particularly well. They are recognisable to buyers without detailed product descriptions. They are consumed and repurchased regularly, which creates repeat business. They are available in wholesale quantities with low minimum order values compared to many other product categories. And in the UK, there is a strong and well-established wholesale supply chain that makes sourcing straightforward once you know how to navigate it.

This guide covers everything you need to get started: how to choose the right platform, how to find and evaluate wholesale suppliers, how to calculate whether the numbers actually work, what to stock, and what mistakes to avoid in your first year of trading.

The Online Selling Opportunity

Before getting into the mechanics, it is worth being clear-eyed about what this model looks like in practice, as opposed to how it is sometimes presented online.

Buying wholesale and selling through a marketplace is a genuine, sustainable business model with real income potential. It is not a get-rich-quick scheme, and it does not run itself. The margins are real but they are not enormous, which means volume and operational discipline matter. The sellers who build successful businesses from this model tend to share a few characteristics: they research thoroughly before buying, they track their numbers carefully, they start small and scale what works, and they treat supplier relationships as a genuine commercial asset rather than just a procurement function.

With that context established, the opportunity is genuinely there. Online retail in the UK continues to account for a significant share of consumer spending. FMCG categories, particularly health and beauty, household goods, and personal care, are among the strongest performing categories in UK e-commerce, driven partly by convenience and partly by consumers comparing prices across retailers. A well-run wholesale-to-retail online operation in these categories, managed by someone who understands their margins and their platform, can generate substantial revenue.

The question is how to set it up properly from the start.

Choosing Your Platform: Amazon, eBay, or Shopify

The three main routes for UK online sellers sourcing wholesale are Amazon, eBay, and Shopify (or another direct-to-consumer platform). Each has a different risk and reward profile, a different fee structure, and a different relationship with customers. Understanding the differences matters before you place your first wholesale order, because the platform you choose will determine which products make sense and what margins you need to target.

Amazon

Amazon is the largest marketplace in the UK and the first choice for many wholesale resellers. The scale of the platform means your products can be in front of millions of buyers within hours of listing, without any marketing spend. For recognised FMCG brands, Amazon is often where buyers go first when they want to compare prices, which creates consistent demand for well-positioned listings.

There are two fulfilment models on Amazon. Fulfilment by Amazon (FBA) means you send your stock to Amazon's warehouse and they handle picking, packing, and delivery to the end customer. Fulfilment by Merchant (FBM) means you handle fulfilment yourself. FBA is strongly preferred by most established sellers because it qualifies products for Prime delivery, which significantly increases conversion rates, and removes the logistics burden from the seller. The trade-off is that FBA carries additional fees on top of Amazon's standard referral fees, and you will also pay storage fees for stock held in Amazon's warehouse.

Amazon's referral fees for FMCG categories typically run between 8% and 15% of the sale price, depending on the specific category. FBA fees add on top of that based on the weight and dimensions of the product. For a typical toiletry or household product selling at around £5 to £8, the combined referral and FBA fees will often run to £1.50 to £3.00 per unit, which is a significant proportion of the margin. Understanding this fully before you select products is essential, which is why the margin calculation section of this guide matters.

One practical consideration on Amazon is category restrictions. Certain categories, including some health and beauty lines and branded products, require approval before you can list them. The process for getting ungated in a restricted category requires proof of purchase from an approved supplier, so ensuring your wholesale supplier can provide proper invoicing is not optional. It is a commercial necessity.

eBay

eBay operates differently to Amazon in several important ways. There is no shared listing model where multiple sellers compete on the same product page. Every seller creates their own listing, which means more control over how your products are presented, but also more work to get listings ranking well in search results.

eBay's fees are generally lower than Amazon's. A standard eBay business seller account carries a final value fee of around 12% to 13% for most categories, with no separate fulfilment fees if you handle your own delivery. For sellers who are shipping directly to customers from their own storage, this makes eBay's total fee burden meaningfully lighter than Amazon's FBA model.

eBay tends to work better for smaller volumes, slower-moving lines, and clearance stock, where the flexibility to price and present products individually is more valuable than Amazon's reach. It is also worth noting that eBay has a more active market for multi-quantity lots and wholesale-style listings, which suits certain product categories and buyer types that Amazon does not serve as well.

Many sellers run both platforms simultaneously, using Amazon for their core fast-moving lines and eBay for slower-moving stock or end-of-season clearance. This approach is sensible once you have built some operational capacity, though it adds complexity that is best avoided in the early stages.

Shopify and Direct-to-Consumer

Running your own online shop through Shopify, WooCommerce, or a similar platform is the third main option, and it works very differently from marketplace selling. You own the customer relationship, you keep a higher share of the revenue, and you have complete control over how your products are presented. The significant downside is that none of the organic traffic that Amazon and eBay provide comes with the platform. You have to generate your own visitors, which means either paying for advertising or investing time in search engine optimisation and social media.

For most sellers starting out with wholesale FMCG products, building a standalone store from scratch is harder than it looks and slower to generate revenue than marketplace selling. The exception is sellers who already have an audience, a niche, or a marketing capability they can leverage. If you are building a personal care brand around own-label products, for example, or if you have a social media following in a relevant space, a direct-to-consumer Shopify store can make excellent long-term sense.

A practical approach for many successful sellers is to start on Amazon and eBay, generate cash flow, and then build a Shopify store once the business has traction and some capital to invest in driving traffic to it. The platforms are not mutually exclusive, and running all three simultaneously is common among sellers at scale.

Sourcing Strategy: How to Buy Wholesale for Online Selling

Sourcing is where the profitability of your business is actually determined. Choosing the right wholesale supplier, on the right terms, for the right products, is the single most important variable in whether your online selling operation makes money.

Finding the Right Wholesale Supplier

The FMCG wholesale market in the UK is well established, with a range of operators offering different combinations of product depth, pricing, minimum order requirements, and service levels. For online sellers specifically, several factors are more important than for traditional bricks-and-mortar retailers.

Product availability and consistency matter more online than offline. When you are running Amazon or eBay listings for specific products, you need to be able to restock those products reliably. A supplier who lists a product but regularly has it out of stock is a problem for your business model, because your listing drops in rankings when you run out of stock, and rebuilding that position takes time and often advertising spend. Before committing to a product range, ask your supplier specifically about stock availability and lead times on the lines you are interested in.

Proper invoicing is essential. This is a practical reality of marketplace selling that many new online sellers overlook until it becomes a problem. Both Amazon and eBay require sellers to be able to demonstrate that products are legitimately sourced, particularly for branded goods. A reputable UK wholesale supplier will issue proper VAT invoices for every order, which is what you will need if Amazon ever asks you to verify your supply chain for a restricted category or during a brand authorisation check. Informal or cash-in-hand purchasing from market traders or unofficial sources does not provide this, and it creates risk for your seller account.

Minimum order quantities need to fit your cash flow, not your ambition. This is a point that catches a lot of new online sellers out. The temptation when starting out is to order as broadly as possible, stocking a wide range in the hope that some of it performs well. In practice, this ties up capital in slow-moving stock and makes it hard to identify what is actually working. A wholesale supplier with a low minimum order value gives you the flexibility to test products at modest quantities before scaling the lines that are genuinely performing. Northern Marketing's minimum order value of £250 plus VAT is specifically designed to support this kind of exploratory buying, making it possible to test a meaningful range without a large upfront commitment.

What to Look For in a Supplier

Beyond the basics of price and availability, a good wholesale supplier for online selling should be able to offer several things that not all distributors provide.

Category depth in the areas where you want to trade is more valuable than breadth across categories you do not need. If your focus is household goods and personal care, a supplier who has genuine depth in those categories, with multiple SKUs per brand, a mix of branded and own-label options, and clear visibility of what is in stock and what is coming in, is more useful to your business than one with a longer catalogue that is spread too thinly to be reliable in any given area.

Clear, competitive trade pricing with transparent terms removes a source of friction from every order. Some wholesalers structure their pricing in ways that are difficult to compare on a like-for-like basis, with base prices that are adjusted by hidden surcharges, delivery thresholds, or tiered structures that only become clear once you are already committed. A straightforward trade price that you can apply your margin calculation to directly is a genuine advantage, and it is worth asking directly whether there are any additional costs beyond the listed trade price before you commit.

A supplier who understands online selling as a customer type is genuinely helpful. Not all UK wholesale distributors have significant experience of serving Amazon FBA sellers, eBay power sellers, or Shopify store owners. Those who do will understand why consistent pack sizes, accurate product descriptions, and timely delivery matter in a way that goes beyond the transaction. They will be able to advise on products that have historically performed well in online channels and flag potential issues such as category restrictions on certain branded lines.

Margin Calculation: Making the Numbers Work

Margin calculation is where many new online sellers make their most expensive mistakes. The assumption that buying cheap and selling at a reasonable markup will automatically generate profit does not account for the full cost of selling through a marketplace. Getting the numbers right before you commit to stock is non-negotiable.

The Fee Structure You Are Working Within

For Amazon FBA, the total cost of selling a product includes the trade price you paid for it, the Amazon referral fee (a percentage of the sale price), the FBA fee (based on size and weight), and any storage fees if stock sits in Amazon's warehouse for more than a few weeks. For a typical FMCG product, the combined fees often account for 30% to 40% of the sale price.

For eBay, the fee structure is simpler. A final value fee of approximately 12% to 13% of the sale price applies to most categories, plus PayPal or payment processing fees if applicable. If you are fulfilling orders yourself, you also need to account for the cost of postage and packaging materials in your margin calculation, which can be significant for lower-value products.

For Shopify or your own store, the platform fees are lower, typically around 2% to 3% of revenue plus transaction fees, but you have to add the cost of driving traffic to your store, whether through paid advertising, SEO investment, or social media. These costs vary widely, but a realistic assumption for paid advertising to a new store is that customer acquisition costs will be significant until the store builds organic momentum.

Working Backwards From the Numbers

The correct approach to margin calculation is to work backwards from the retail price, deducting fees to establish the maximum trade price you can afford to pay while still hitting your target margin.

Here is a simple worked example for an Amazon FBA product. Suppose a toiletry item sells consistently on Amazon at £6.99. The Amazon referral fee for health and beauty is 8%, which comes to approximately 56 pence. The FBA fee for a small, light item in this category is typically around £2.50 to £3.00 per unit. That leaves approximately £3.50 to £3.90 before you account for the trade price itself.

If your target gross margin on the trade price is 40%, and your total pre-margin revenue after fees is £3.70, you would need to source the product for no more than £2.22 to achieve that margin. If the wholesale trade price is £2.80, the margin at that price point is only around 24%, which may or may not be acceptable depending on your volume expectations and overhead costs.

This kind of calculation needs to be done on every product before you commit to stock. It sounds laborious, but it quickly becomes habitual, and it prevents the very common situation where a seller has ordered 200 units of something only to discover on the first few sales that the fees eat the margin entirely.

Target Margins by Category

As a general guide, the FMCG categories that tend to offer the best margins for online sellers are personal care, beauty, home fragrance, and household goods. Branded confectionery and soft drinks are harder to make work on Amazon and eBay due to tight trade margins and heavy competition from larger sellers. Toiletries, haircare, candles, and wax melts tend to offer more room, particularly when sourced through a supplier who carries own-label ranges alongside recognised brands.

Own-label and exclusive products offer the best margin potential because they are not subject to the same price competition as branded goods. When every seller on Amazon is listing the same branded product, the Buy Box is typically won on price, which drives margins down over time. A product that is only available from your supplier, or a supplier's own brand that is not widely distributed, cannot be competed against on price in the same way, which protects your margin.

Northern Marketing's own brands, including Perfect Scents for home fragrance, ET8 for haircare, and Lumist for personal care, are examples of this kind of opportunity. They are quality products with genuine consumer appeal, but because they are exclusive to Northern Marketing's distribution, you are not competing with dozens of other sellers on the same listing.

Building Your Product Range

One of the most reliable pieces of advice for new online sellers is to start narrower than you think you need to. The instinct is to stock a wide range and let the market tell you what works. The practical reality is that managing a wide range creates complexity that is difficult to handle when you are also learning how the platforms work, negotiating with suppliers, and handling customer service.

A better approach is to select a core range of five to ten product lines in one or two related categories, order modest quantities, and measure performance rigorously before expanding. Products that sell consistently at your target margin get reordered. Products that do not move, or that do not hit margin, get cut.

FMCG Categories That Perform Online

Based on category characteristics rather than specific product recommendations, the FMCG areas that tend to work well for wholesale online selling in the UK share several traits: they have consistent consumer demand that is not highly seasonal, they are lightweight relative to their value (which keeps fulfilment costs manageable), they are not subject to extreme price competition from supermarkets on the exact same SKU, and they are available from wholesale suppliers at margins that leave room after platform fees.

Personal care and toiletries, including shampoo, conditioner, shower gel, body lotion, and deodorant, score well on most of these criteria. Consumers buy them regularly and will repurchase from a seller they have had a good experience with. Home fragrance, including air fresheners, wax melts, candles, and room sprays, is a growing category in UK online retail with good margin potential, particularly for own-label and specialist ranges. Household cleaning products, including surface cleaners, laundry products, and dishwasher products, have consistent demand but can be heavy relative to their value, which affects fulfilment economics.

Haircare and beauty products can offer strong margins but require more care in terms of category restrictions and brand authorisation on Amazon. Seasonal and gift lines work well for sellers who can time their buying accurately and manage the inventory through peak periods.

Seasonal Buying

FMCG has a seasonal dimension that online sellers often underestimate in their first year. Home fragrance sales increase significantly in the autumn and winter months. Gift sets move heavily in the weeks before Christmas, Mother's Day, and Valentine's Day. Personal care and beauty products see uplift around key gifting occasions. Understanding the seasonal pattern in your categories and buying ahead of it gives you an advantage over sellers who respond reactively.

The risk of seasonal buying is overstocking. Ordering aggressively ahead of Christmas and then finding that half your stock is still in Amazon's warehouse in January creates both a cash flow problem and storage fee costs. Seasonal buying should be proportionate to your established rate of sale on those lines, scaled up modestly rather than dramatically, until you have a year or two of trading history to draw on.

Common Mistakes to Avoid

Most of the mistakes that trip up new online sellers sourcing wholesale FMCG are predictable and avoidable. Here are the ones that come up most consistently.

• Buying too much of the wrong thing.
  • This is the most common and most costly mistake. It happens when sellers order based on optimism rather than data, or when they order a large quantity to get a better per-unit price without having tested the market at a smaller quantity first. Stock that does not sell ties up capital, incurs storage fees on Amazon, and eventually has to be sold at a loss or disposed of. Always test at minimum viable quantity before scaling.

• Underestimating platform fees.
  • A product that looks profitable at the trade price level can be loss-making once all fees are accounted for. Amazon's FBA fees, referral fees, and storage fees add up to a significant proportion of the sale price on lower-value products. Always run a full margin calculation using the actual fee structure before committing to a product line, not an approximation.

• Ignoring restricted categories and brand authorisation requirements.
  • Amazon in particular enforces restrictions on certain product categories and branded lines. Listing a product without the required approval can result in the listing being removed and, in repeated cases, account suspension. Check category requirements before sourcing, and ensure your wholesale supplier can provide the documentation you would need if Amazon asks for proof of legitimate supply.

• Choosing a supplier based on price alone.
  • The cheapest trade price is not always the best deal. A supplier whose stock availability is unreliable, whose invoicing is not up to Amazon's standards, or whose delivery is inconsistent will cost you more in lost sales and account issues than a slightly higher trade price from a supplier who operates properly. Vet your wholesale supplier carefully before you become dependent on them.

• Not tracking margin by product.
  • Once you are selling across multiple product lines, it is easy to focus on total revenue and overlook the fact that some products are generating most of your profit while others are barely covering their costs. Building a simple spreadsheet that tracks trade price, platform fees, sale price, and resulting margin for every active product line is not optional if you want to run the business intelligently. Review it at least monthly and cut underperforming lines without sentiment.

• Neglecting account health on the platforms.
  • Both Amazon and eBay operate seller account health systems that can restrict or suspend selling privileges if certain performance metrics fall below acceptable levels. Late dispatch rates, high return rates, and negative feedback all affect account health. Sourcing products that have quality issues, or committing to dispatch timelines you cannot meet, will cause problems that are entirely avoidable with careful planning.

Managing Growth: From First Orders to Sustainable Scale

Once you have found a handful of product lines that sell consistently at your target margin, the question becomes how to grow without creating the operational problems that sink a lot of otherwise promising online selling businesses.

Cash flow is the binding constraint for most growing online sellers. Buying wholesale means paying for stock before you have sold it and recovered the cash. On Amazon, your payout arrives every two weeks. On eBay, it is faster but still involves a lag between selling and receiving funds. As you scale, the gap between money going out for stock and money coming back in from sales gets larger in absolute terms, even if the percentages stay the same.

Managing this means ordering in quantities that are calibrated to your actual rate of sale rather than your aspirational rate of sale, maintaining a cash reserve that covers at least one or two ordering cycles, and resisting the temptation to tie up working capital in stock that is not yet proven to sell.

Supplier relationships become more valuable as you scale. A supplier who knows your account, understands your product preferences, and can alert you to new lines or promotions that fit your range is an asset. Build that relationship actively: communicate clearly about what is working and what is not, give advance notice when you are planning seasonal buying, and pay on time. The accounts that get the best service from wholesale suppliers are not always the biggest ones. They are the ones that are straightforward to deal with.

Diversifying across product lines reduces the risk that a single product issue, whether that is an Amazon restriction, a brand changing its trade terms, or a competitor undercutting you significantly, disrupts your entire business. Building a range of ten to fifteen well-performing product lines across two or three related categories gives you resilience that a business built on two or three lines does not have.

Getting Started with Northern Marketing

Northern Marketing is a Lancashire-based UK wholesale supplier specialising in household goods, toiletries, personal care, home fragrance, and health and beauty. We supply online sellers, independent retailers, convenience stores, market traders, and exporters across the UK, with a minimum order value of £250 plus VAT designed to make it accessible to test new product lines without committing to large quantities upfront.

Our product range spans over 500 SKUs including major brands such as Febreze, Air Wick, Fairy, Lenor, Colgate, and Yankee Candle, alongside our own exclusive brands including Perfect Scents home fragrance, ET8 haircare, Lumist personal care, and a growing range of own-label products developed by our in-house product team. For online sellers, these own-brand lines are particularly valuable because they are not subject to the price competition that affects widely-distributed branded goods on Amazon and eBay.

We operate a 40,000 square foot warehouse in Nelson, Lancashire, with our own delivery fleet covering the UK. All orders come with proper VAT invoicing, which is what you will need when selling through Amazon or responding to brand authorisation queries.

Opening a trade account is free and straightforward. If you are sourcing wholesale products for Amazon, eBay, Shopify, or any other online channel, and you are looking for a reliable UK supplier with a strong FMCG range and a minimum order that fits your buying approach, we would be glad to hear from you.

Open a free trade account today and start sourcing.

Final Thoughts

Selling wholesale FMCG products online is a genuinely viable business model for UK sellers who approach it with the right discipline. The platforms are accessible, the supply chain is well developed, and the categories that work well online, particularly personal care, home fragrance, and household goods, offer margins that reward careful buyers.

What separates the sellers who build sustainable businesses from those who do not is largely operational. Research before you buy. Calculate margins fully before you commit. Choose suppliers carefully and treat those relationships as commercial assets. Track performance by product and act on what the data tells you. Start smaller than feels comfortable, and scale what is working rather than what you hoped would work.

The sourcing side of this business, finding the right products at the right price from a supplier you can trust, is the foundation everything else sits on. Get that right, and the rest of the operation becomes considerably more manageable.