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Marketplace vs Own Online Shop: Which Route Grows Your UK Business Faster?

Marketing · June 16, 2026 · Harper Quinn · 6 min

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Amazon and eBay give you instant traffic but take 8–15% in fees and own the customer. Shopify and WooCommerce give you control but demand marketing spend. We compare the real UK numbers.

Every UK business that sells products online faces the same fork in the road: do you list on Amazon and eBay, where the customers already are, or do you build your own online shop — a Shopify or WooCommerce storefront that you control completely? The answer is not one or the other for most growing businesses; it is how to sequence them and where to place your bets.

This guide compares the two routes on the metrics that matter — costs, customer ownership, scalability, and profit margins — with real 2026 UK figures. This is general business information, not legal or financial advice.

Selling on marketplaces: the pros

Marketplaces — Amazon, eBay, Etsy, OnBuy, Fruugo — are the UK's digital high streets. They bring one thing that a new online shop cannot buy at any price: built-in traffic. Amazon UK received roughly 480 million visits per month in early 2026 (Similarweb), and a significant share of those visitors are actively searching for products to buy.

The advantages are real:

• Instant audience. List a product on Amazon and it is visible to millions of UK shoppers within hours. No SEO, no Google Ads, no social media campaign required.
• Trust by association. UK consumers trust Amazon's checkout, returns process, and buyer protection. A new brand with its own website has to earn that trust from scratch.
• Fulfilment infrastructure. Amazon's FBA (Fulfilment by Amazon) handles storage, picking, packing, delivery, and customer service — letting you scale without warehousing or logistics.
• Low barrier to entry. You can start selling on eBay this afternoon with a personal account and a smartphone photo. The feedback loop is immediate: list, sell, learn, repeat.

Selling on marketplaces: the cons

The disadvantages are equally real and become more painful as you grow:

• Fees. Amazon's referral fees range from 8% (consumer electronics) to 15% (beauty, luxury). eBay charges 12.8% plus £0.30 per order in most categories. On a £50 product, that is £4–£7.50 gone before you cover the cost of goods.
• No customer relationship. Amazon does not share customer email addresses or phone numbers. You cannot build an email list, retarget buyers with ads, or send them a discount code for their next purchase. The customer belongs to Amazon, not to you.
• Price competition. On a marketplace, your product sits next to competitors' listings with price, rating, and delivery speed all visible at a glance. The pressure to compete on price is relentless, and the "Buy Box" algorithm rewards the lowest price and fastest delivery.
• Platform risk. Amazon can suspend your account, delist your products, or change its fee structure at any time. Building a business entirely on rented land is a strategic vulnerability.

Running your own online shop: the pros

An own-brand online shop — typically built on Shopify, WooCommerce, or BigCommerce — is an asset you own. Every customer, every email address, every order history sits in your database.

The advantages:

• Full margin. No marketplace referral fees. On a £50 product, saving 12–15% in fees adds £6–£7.50 to your bottom line — a 25–35% increase in net profit on a typical 20% margin product.
• Customer ownership. You collect email addresses, build a mailing list, and can market directly to past buyers. Repeat purchases — which typically cost 5–7× less to acquire than first purchases — become your growth engine.
• Brand control. Your site looks exactly how you want it to. Your brand story, photography, pricing, and customer experience are yours to shape — no Amazon branding, no "customers also bought" competitors on your product page.
• No platform dependency. You are not at the mercy of Amazon's algorithm changes, account reviews, or fee increases. Diversifying away from marketplace dependency is a risk-management imperative for any business above six figures in revenue.

Running your own online shop: the cons

• You have to drive your own traffic. No one will find your Shopify store by accident. You need SEO, Google Ads, social media content, influencer partnerships, email marketing, or all of the above — and that costs time and money.
• Customer acquisition cost (CAC) can be high. A Google Shopping click for a competitive product category can cost £0.50–£2.00 in 2026, and not every click converts. Acquiring a customer through paid channels can cost £10–£30 depending on the product and category.
• Trust barrier. A first-time visitor to your site does not know who you are. You need social proof (reviews, testimonials, press coverage), a professional design, and clear policies to convert them.
• Technical and operational overhead. Someone needs to manage the site, handle hosting and security, process orders, manage inventory, and handle customer service — all things Amazon FBA does for you.

Head-to-head comparison

The hybrid strategy: how most successful UK brands do it

The data from the UK ecommerce sector is clear: the businesses that thrive use both channels, in sequence.

Phase 1: Validate on a marketplace. List your product on Amazon or eBay first. The feedback is immediate — sales data, reviews, returns, customer questions. You learn whether the product sells, at what price, and to whom, without spending a penny on marketing. If it works on Amazon, it has a fighting chance on your own site.

Phase 2: Build your own shop in parallel. Once you have validated demand, build a Shopify or WooCommerce store. Include a card in every marketplace order directing customers to your site — "Buy direct and save 10% with code DIRECT10" or "Join our mailing list for exclusive offers." The marketplace becomes your paid acquisition channel; your own site becomes the retention and margin engine.

Phase 3: Shift the balance. As your email list, SEO traffic, and brand recognition grow, the proportion of revenue coming through your own site should increase. Mature UK ecommerce brands typically aim for 60–70% of revenue through owned channels and 30–40% through marketplaces — capturing the best of both while reducing platform dependency.

The bottom line

Marketplaces give you traffic and trust overnight, but take a double-digit cut of every sale and keep the customer relationship for themselves. Your own online shop gives you full margins, full customer data, and full control — but you have to find your own customers, and that costs money.

The smart strategy is not either/or. Start on a marketplace to prove your product sells, then build your own shop as the long-term asset. Use the marketplace to acquire customers and your own site to retain them. The brands that thrive in 2026 are the ones that own their customer relationships — and you cannot own what a marketplace will not share.

Key takeaways

• Marketplaces like Amazon and eBay provide built-in traffic and trust but charge 8–15% referral fees and give you no direct customer relationship — you cannot email, retarget, or build loyalty.
• An own-brand online shop (Shopify, WooCommerce) costs £20–£50/month in platform fees but requires separate marketing spend — Google Ads, social media, SEO — to drive traffic.
• The optimal strategy for most growing UK ecommerce businesses is to start on a marketplace for validation and cash flow, then build an own-brand shop in parallel as the primary long-term asset.
• Customer lifetime value (LTV) is the decisive metric: marketplaces win on acquisition cost; own-brand shops win on repeat-purchase economics.

Sources

• Amazon UK — Selling Fees
• eBay UK — Seller Fees
• Shopify — UK Pricing

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