Amazon, Shopify or Marketplace: Which Sale Is Actually More Profitable?
The same product can generate the same $100 of customer revenue and leave a very different amount of contribution depending on where the transaction happens. Channel fees, fulfillment, acquisition, refunds and tax treatment can change the economics long after the selling price looks identical.
Direct Store
Marketplace A
Marketplace B
A product does not have one universal margin.
A merchant can look at the same product in three sales channels and see $100 revenue in each place. That visual consistency makes the transactions feel economically comparable.
They may not be.
Every channel creates its own route between the customer’s payment and the contribution retained by the business.
One channel may require heavier advertising. Another may charge a larger transaction or referral fee. Another may take over fulfillment but expose the merchant to different storage, logistics or return economics.
So product profitability should not stop at SKU level. It often needs to be measured at SKU × channel level.
The customer buys the same product. The business processes three different sales.
Compare what remains — not only what the channel charges.
Marketplace economics are sometimes reduced to one visible fee. Direct-store economics are sometimes treated as if avoiding that fee makes the transaction automatically superior.
Both shortcuts are dangerous.
The useful comparison is the complete variable economic path of the order.
| Per-order economics | Direct Store | Marketplace A | Marketplace B |
|---|---|---|---|
| Revenue | $100 | $100 | $100 |
| COGS | −$40 | −$40 | −$40 |
| Payment / marketplace fees | −$4 | −$15 | −$18 |
| Fulfillment & shipping | −$9 | −$12 | −$13 |
| Expected refund-related loss | −$5 | −$7 | −$8 |
| Acquisition / channel promotion | −$16 | −$6 | −$6 |
| Contribution | $26 | $20 | $15 |
These figures are illustrative and are not estimates of actual fees for any specific platform. Real channel economics depend on category, country, fulfillment method, advertising, seller terms, returns, taxes and other merchant-specific conditions.
The exact cost structure varies by business. The principle does not: compare channels using a consistent economic definition.
Volume can reverse the ranking.
The direct store produces the strongest contribution per order in the illustrative model: $26 versus $20 for Marketplace A.
But suppose the direct store generates 1,000 orders while Marketplace A generates 1,600.
The marketplace has weaker unit economics but greater commercial reach.
Contribution per order is only half the decision.
Total channel contribution depends on both economic quality and the amount of economically viable volume the channel can generate.
A lower-contribution channel needs to sell more to create the same value.
One thousand direct-store orders at $26 contribution generate $26,000.
Marketplace A contributes $20 per order, so it needs 1,300 orders to generate the same $26,000.
contribution
$26,000 ÷ $20 = 1,300 orders. Marketplace A therefore requires 30% more orders to equal the contribution generated by 1,000 direct-store orders in this simplified example.
Channel profitability is created by the complete system.
Tax treatment can make apparently identical channel revenue economically different.
A displayed selling price is not always the same as economically comparable net revenue. VAT-inclusive pricing, sales taxes, marketplace-facilitator rules, cross-border obligations and the treatment of recoverable taxes can vary by jurisdiction and channel.
The correct comparison depends on the merchant’s actual tax position. Channel profitability analysis should therefore use a consistent tax-aware revenue and cost basis rather than assuming every $100 transaction contains the same economics.
Different channels can perform different economic jobs.
Multichannel strategy becomes more useful when the goal changes from declaring one platform universally superior to understanding the role each channel plays.
Stronger economics per order
A channel may deserve investment because it retains more contribution, enables better customer economics or supports stronger product mix.
Lower contribution, greater reach
A channel with weaker unit economics can still create substantial value if the additional volume remains contribution-positive.
Access to demand you may not reach directly
A channel can have strategic value through customer discovery, geography or demand access — but that value still needs an economic boundary.
Revenue can grow while sales migrate toward weaker economics.
Suppose total revenue increases because Marketplace B grows rapidly. The top line looks stronger, but every $100 order there contributes $15 in the illustrative model compared with $26 through the direct channel.
If a larger share of total sales moves toward the lower-contribution channel, the business can experience channel-mix deterioration even while total revenue rises.
This does not mean the marketplace growth should automatically be stopped. It means the business should understand whether the incremental volume is creating enough contribution to justify the changing mix.
Compare channels with six questions.
The same product does not have one margin. It has a margin for every channel it travels through.
Do not choose channels by fees. Choose them by economics.
Compare the same products using consistent contribution logic across every sales channel. Include the costs required to create, process and support each order; then combine contribution per sale with realistic volume, customer behaviour and tax treatment. The channel with the highest margin percentage is not automatically the best — and the channel with the highest revenue is not automatically creating the most economic value.
Multichannel growth needs multichannel profit intelligence.
MarginLab is built around a simple principle: commercial performance becomes more useful when revenue is connected to the costs, products, channels and tax assumptions that determine what the business actually keeps.
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