What You Actually Keep: How to Compare Marketplace Fees on the Same Sale

Two marketplaces can sell the same shirt for the same price and still pay you different amounts. Fees are the reason. Each platform builds its fees a little differently, and the differences matter most at the low and high ends of your price range.

This post walks through how to compare fees properly. You'll leave with a way to check any item in a minute or two.

The parts of a marketplace fee

When you compare platforms, don't stop at the headline percentage. Look at each of these:

• Percentage of the sale. Most platforms take a cut of the sale price. Some also take a cut of the shipping the buyer pays, and some don't.
• Payment processing. Some platforms charge this separately. Others roll it into the main fee.
• Flat or per-order fees. A small fixed charge on every order hardly matters on a $100 item. On a $6 item it can eat much of your profit.
• Minimum fees or price tiers. Some platforms charge a flat fee below a certain price and a percentage above it.
• Who pays. On some platforms the buyer pays some fees at checkout. That changes your payout and can also change how competitive your price looks.
• Optional costs. Promoted listings, boosts and similar add-ons are your choice, but if you use them, count them.

Fee schedules change, so check each platform's current fee page instead of relying on a number you remember.

Why price point changes the winner

Here's a made-up example. These rates are illustrative, not any real marketplace's fees.

• Platform A: 13% of the total, with no flat fee
• Platform B: a flat $3 under $15, and 20% above that

Sale price	Platform A fee	Platform B fee
$10	$1.30	$3.00
$50	$6.50	$10.00
$150	$19.50	$30.00

Under this made-up setup, Platform A wins at every price. Now change one assumption. Give Platform A a $1 flat fee per order and make Platform B a plain 12% with no flat fee. At $10, A costs $2.30 and B costs $1.20. At $150, A costs $20.50 and B costs $18.00. The result flips.

You can't eyeball this. You have to run the numbers at the price you actually expect to sell for.

A quick routine for comparing

1. Start with a realistic sale price. Use sold prices, not asking prices.
2. Decide who pays shipping. If the buyer pays, check whether the platform takes a cut of the shipping too.
3. Run the same item through each platform's fee math.
4. Compare net payout, not fee percentage. Net payout is what lands in your account after fees.
5. Subtract your costs. That means what you paid for the item, supplies, and any shipping you cover. What's left is your profit.

Use the free calculators

Summit Listing Engine has free fee calculators at /tools for eBay, Poshmark, Mercari, Depop, Vinted, Facebook, Etsy and Whatnot. There's also a reseller profit comparison that lets you view platforms side by side. You don't need to log in.

Put in your item's likely sale price and costs, and compare what you'd keep on each platform before you decide where it goes.

The takeaway

Find the platform that leaves you the most money at the price this item will actually sell for. That's usually a better choice than the platform with the lowest-sounding fee. Check the current numbers, compare net payouts, and let the math decide.