In this guide 6 sections
Compare channels by margin, not traffic. Marketplaces bring buyers fast but take fees, own the customer record and set the returns rules, while an own store keeps margin and data but must earn every visitor. Most sellers run both. They share one stock and order system.
Work out margin after every deduction
Pick one product. Trace a single order on each channel. On a marketplace, list the referral fee, the closing fee, the shipping fee, the advertising spend for page one and the settlement delay. Deduct each from the selling price.
On your own store, the deductions are the payment gateway charge, the shipping label, packaging, the platform subscription and the cost of bringing a visitor to the site. Search ads and email carry a cost too, and it is the one many owners forget until the month ends.
Put both columns side by side. Compare your five best sellers. Low margin items often survive on a marketplace only because the volume hides the gap, so check them again after every deduction is counted.
- Referral and closing fees per category
- Gateway charge and refund fee on your store
- Courier cost by weight slab and zone
- Ad spend per order, not per click
- Days until the settlement reaches your bank
Who owns the customer after the sale?
A marketplace hides the buyer’s email, so you ship a parcel to a name and cannot send a reorder reminder, a spare parts offer or a warranty notice. That hurts repeat sales.
On your own store you hold the account, order history, delivery addresses and consent record, and that data powers repeat orders, dealer upgrades and service follow ups. That data survives a suspension.
Suspension is real. A single listing dispute can freeze payouts, and you should ask how much of your revenue sits behind one login you do not control, then do the sum.
Returns, disputes and brand presence
Marketplaces set the return window and often side with the buyer, so a parcel comes back used or damaged and you absorb the loss. Your own store lets you write the policy, ask for photos and grade the returned unit before refunding, which protects margin on bulky or technical goods.
Brand is the other half. On a marketplace your product sits beside five lookalikes ranked by price and reviews, and the buyer rarely remembers whose name was on the listing. On your site you control the photographs, the spec sheet, the installation video and the language used for your trade buyers.
A marketplace is a shop window. Your store is the shop. Windows draw crowds, but the sale that repeats is made inside the shop, where the buyer can read the manual, ask a question and see a dealer price.
- Return window and who pays the pickup
- Condition grading on returned stock
- Product page control: photos, spec table, manuals
- Review ownership and removal rights
One stock record behind every channel
Overselling is the real danger. A unit sells on Amazon at ten and again on your store minutes later, so one buyer waits, then cancels, and the marketplace marks a defect against your account.
The fix is a single inventory and order system. Each marketplace connects by its seller API, and in markets with a national open commerce network, that network works as another feed. Orders from every source land in one queue, and stock counts push back to each listing after every sale, return or goods receipt.
Your store becomes the hub. Pricing, SKU codes, tax rules and shipping labels live in one place, and the marketplaces are spokes that read from it. Keep it simple.
A sensible order of moves
If you are new to online selling, list a handful of fast movers on one marketplace to learn demand, fees and returns. Keep those listings plain. Meanwhile build your own store for the full catalogue, trade pricing and anything bulky or technical, since those items need the spec sheet and the dealer price list.
Review quarterly. Compare contribution margin, repeat buyer count and return cost for each channel, then cut the listings that lose money after all deductions. Cut without sentiment.
Write down your first test this week: choose ten SKUs, trace one order per channel on paper, and see which channel you would keep.
Channel margin worksheet
One grid, ten SKUs. Two blocks of columns, marketplace and own store, each list selling price, platform fee, shipping, payment charge, ad cost per order, return allowance and net margin. The bottom line totals contribution per channel, flags any SKU that loses money, and shows which channel earns more per unit shipped.
Open a blank worksheet to printQuestions owners ask
Should a small seller skip marketplaces entirely?
Not always. A marketplace gives buyers who already trust the platform, so use it to test demand while you build your own store and track margin per order.
Can one inventory count serve both channels?
Yes. Connect each channel to a central stock record through its seller API or a connector, and let every sale, return and goods receipt update the count. The new figure then goes back to every listing.
Who handles returns from marketplace orders?
Rules belong to the marketplace. The unit still reaches you, so record it in your own returns flow, grade its condition, restock or write it off so the stock figure stays honest.
Does an own store need a developer?
A hosted template can start a simple catalogue. Dealer pricing, ERP links and unusual shipping rules usually need custom work, so decide by listing the rules your orders follow before choosing a platform.