Your Mercari sale
Fee rates used — edit if yours differ
Default 12.9% = 10% selling fee + 2.9% payment processing. Default $0.50 is the payment-processing fixed fee. Mercari has changed this structure before — if your sales report shows a single 10% fee and no processing charge, set 10% and $0.00.
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What you keep
Break-even is the lowest item price where you stop losing money.
Two fees, one base
On the default sale — $40 item, $5 shipping paid by the buyer, $12 cost, $4 postage, $1 packaging — the buyer pays $45.00. Mercari's fees come to about $6.30, within a few cents of eBay's $6.36 on the same sale, and you keep about $21.70.
Selling fee — 10%
Charged on the item price plus the shipping the buyer pays. Selling an item cheaply with expensive shipping does not reduce the fee, because the shipping is in the base.
Payment processing — about 2.9% + $0.50
Charged on the same base. The fixed $0.50 is what makes very cheap items unattractive: on a $10 sale with no shipping it is 5% of the sale all by itself. Mercari has revised its fee structure more than once, which is why both fields above are editable.
What is not in the default number
Free shipping offers. If you pay the shipping to attract buyers, put that amount in "postage you pay" — or set the buyer's shipping to 0 and your postage to the label cost, which is what actually happens to your money.
Promoted listings. Mercari's promotion tools raise visibility; treat any spend as a cost of the sale if you use them per item.
Returns and cancellations. A return can cost you the outbound and return postage. If returns are common in your category, add the average loss to "packaging / other".
Break-even and target-margin prices
With these costs the item breaks even at $15.09. To keep 30% of revenue rather than any profit at all, the price needs to be $25.65. Mercari buyers negotiate in messages and through offers, so knowing the floor is the difference between a sale and a donation.
Price the same item everywhere before you list
The free calculator on the front page compares five marketplaces side by side. The Pro version is a single HTML file you keep forever:
- 14 channels — Mercari, Etsy, eBay, Amazon, Shopify, Poshmark, Depop, Whatnot, TikTok Shop, Facebook, Gumroad, Whop, Stripe, custom
- Editable fee table that remembers your real rates
- Batch mode: paste a whole inventory and price it at once, with CSV export
- Works offline, no account, nothing sent anywhere