Marketplace vs Own Online Store vs Social Commerce: Where Should You Sell First?

A new online seller has three kinds of shop window available. A marketplace, where millions of shoppers already search. Your own online store, on your own domain. And social platforms where products are bought inside videos and posts. Each can be the right first move, and each has ended businesses that relied on it alone.

This guide compares the three on what they cost, what they give you and what they can take away. It is part of the Models & Types section of the Kurums E-Commerce pillar.

What is the real difference between the three channels?

The difference is who brings the buyer. On a marketplace the platform brings them and charges you for access. On your own store you bring them, through search, advertising, email or word of mouth. In social commerce a creator or an algorithm brings them, usually before they knew they wanted the product.

What do marketplaces give you, and what do they cost?

Marketplaces give you demand, trust and infrastructure. Shoppers arrive with a credit card saved and an intention to buy, the platform handles payment and often delivery, and a new seller with no reputation borrows the platform's.

The scale explains the pull. ECDB estimates Amazon's 2025 gross merchandise value at about US$847 billion, with roughly 754 million buyers placing around 19.5 orders each per year. In DHL's 2026 E-Commerce Trends Report, as summarised by Lengow, a single marketplace is used by more than 80% of online shoppers in most large countries: Amazon in the US, Germany, the UK and India, Mercado Libre in Argentina, Trendyol in Türkiye, Allegro in Poland, bol in the Netherlands.

The price of admission has several layers. Using Amazon's US terms as the reference:

• Selling plan: US$39.99 a month for the Professional plan, or US$0.99 per item on the Individual plan.
• Referral fee: a percentage of the total selling price, 15% in most categories and lower or higher in some.
• Fulfilment: if you use the platform's warehouses, a per-unit fee by size and weight, plus storage. Amazon raised base fulfilment fees by an average of about US$0.08 per unit in January 2026.
• Advertising: sponsored placements, which have become close to mandatory for visibility in competitive categories.

Seller-tool providers that model full costs put the total at roughly 30 to 45% of the selling price for a standard-size item. Other marketplaces have different schedules and the same structure; we go through the big ones by region in top online marketplaces by country, Europe's marketplaces and Türkiye's marketplaces.

The non-financial costs matter as much. You do not get the customer's email address for marketing. Your listing sits beside competitors', sometimes on the same page. The platform can change fees, search ranking or policy at any time, and it can suspend an account while a complaint is investigated. Sellers who earn 90% of revenue on one marketplace have a single point of failure.

What does your own online store give you?

Your own store gives you margin, data and control. You keep the commission, you see who bought and can email them again, and you decide how the brand looks, what is bundled and what the returns policy is.

The fee comparison is stark. On a hosted platform such as Shopify, the Basic plan is US$39 a month (US$29 billed annually) with online card rates of 2.9% plus 30 cents in the US. On self-hosted WooCommerce the software is free, hosting typically runs US$25 to US$350 a month and card processing is about the same 2.9% plus 30 cents. Either way, platform and payment costs come to a low single-digit percentage of revenue for a growing store, against a double-digit commission on a marketplace. Full cost breakdowns are in our Shopify review and WooCommerce review.

The missing line is traffic. A new domain has no visitors. You earn them slowly through search and content, or buy them through ads, and conversion on a store nobody has heard of is modest: benchmark averages range from about 1.4% for Shopify stores (Littledata) to around 2.7% across larger brands (Dynamic Yield). If a click costs 0.80 and 2% of visitors buy, each order has cost 40 in advertising before the product is paid for.

So the own store earns its keep on the second order. Email and SMS to past customers cost close to nothing, repeat buyers convert several times better than strangers, and that is the margin a marketplace seller never sees.

How is social commerce different from advertising on social media?

Social commerce means the purchase happens inside the social platform: a product tag, a shop tab or a live stream with in-app checkout. Advertising on social media sends people to your store; social commerce keeps them in the feed and takes a commission.

The model is proven at very large scale in China. ECDB ranks Douyin, the Chinese sibling of TikTok, as the world's third-largest e-commerce platform by 2025 GMV at about US$656 billion. Its playbook, described in our story on China's live commerce, is now being exported through TikTok Shop, while Western platforms have built their own versions; our guide to Pinterest Shopping covers one of the calmer ones.

What it changes for a seller:

• Demand is created, not captured. People buy things they were not looking for. That favours visual, demonstrable, low-to-mid-priced products.
• Creators are the sales force. Affiliates take a commission per sale. Good ones are worth more than any ad account; finding and keeping them is the real work.
• Volatility is high. One video can sell a month's stock in a day, and nothing may happen for the next six weeks. Inventory planning is hard.
• Returns run higher. Impulse purchases are regretted more often. Budget for it.

Which channel has the best unit economics?

There is no universal winner; the answer depends on your gross margin and how often customers reorder. A useful comparison is contribution per first order and per repeat order on each channel.

Take a product selling at 50 with a landed cost of 15 (70% gross margin).

These are illustrative numbers, not benchmarks. The pattern is what matters. The marketplace is steady. The own store loses to it on the first order and beats it comfortably on every repeat order. Social sits in between, with more variance. A product people buy once favours marketplaces. A product people reorder favours your own store. The method behind the table is laid out in e-commerce unit economics.

In what order should you add channels?

Start where your buyers already shop, prove the product, then build what you own. For most physical products that means marketplace first, own store second, social third. For brands born from an audience it is the reverse.

Stage 1: validate. List a small range on the marketplace that dominates your country. You learn the real market price, the search terms buyers use and whether reviews are kind. Cost: stock and fees.

Stage 2: own. Launch a simple store on your own domain. Put a card in every parcel that gives a reason to visit it that complies with marketplace rules: warranty registration, care guides, spare parts. Start an email list from day one.

Stage 3: amplify. Seed products with a handful of creators whose audience matches your buyer. Open a social shop if the platform supports your country.

Stage 4: diversify. Add a second marketplace or a second country. Our market entry metrics guide lists what to check before you do.

What tools keep three channels from becoming three jobs?

Multichannel selling fails operationally before it fails commercially: stock sold twice, prices out of sync, orders in three inboxes. The fix is one source of truth for products, stock and orders, connected to every channel.

Most hosted store platforms sync catalogues to the major marketplaces and social shops natively or through apps. Beyond a few hundred orders a month, dedicated tools take over: a multichannel listing or feed manager, shipping software that pulls orders from every channel into one label queue, and an inventory or warehouse system. Start with the checklist in the e-commerce tech stack guide and the Kurums comparisons of shipping software and warehouse management software.

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