Marketplace fee & profit calculator
US-dollar estimates using standard rates: referral and payment fees, your costs, margin, breakeven, and the prices you would need for a 20/30/40% margin. Use your actual category rate below when known. Free, no signup.
Include any shipping amount paid by the customer in the total above; enter what you pay for shipping separately. Taxes, returns, subscriptions and other category-specific charges are not included.
Want the listing itself to earn those margins? Get it roasted free — score out of 100, the fixes that matter, no signup. Or start free for platform-native listings in 26 markets.
Free: Listing roast · Fee calculator · Hall of Flame · API docs
See it work
Three steps, and what each one actually produces - words, pictures and video.
1
Give it what you have
A listing, a link, a photo, a product name, or the email a marketplace just sent you.
2
It writes, draws and checks, per marketplace
Six different listings and the images to go with them, each to that marketplace's limits and rules, with measured keywords behind the words.
3
You publish; it keeps watching
Files, exact fields or one-click fill; then daily rank, price and listing-health watch.
One product, six listingsExample · cold brew coffee maker · pictures made by Optimlister
Why each version differs: every card is written fresh to the rule printed on it - Amazon now uses a 75-character Item name plus 125-character Item Highlights and benefit bullets, Etsy uses buyer-friendly titles and up to 13 tags, eBay uses item specifics, and Walmart uses structured attributes. The meter under each title shows how much of that marketplace's title limit the example uses. Every asset here is a real generator output with its exact cost - see the receipts.
Amazon75-char Item name · 125-char highlights · 5 bullets
Cold Brew Coffee Maker 1 L, Glass Pitcher, Steel Filter
- Fine steel mesh keeps grounds out of the cup
- Airtight bamboo lid - fresh for a week in the fridge
- Slim 1 liter pitcher fits a fridge door
Etsy140 chars · 13 tags · lifestyle first
Cold Brew Coffee Maker - 1 Liter Glass Pitcher with Steel Filter and Bamboo Lid, Coffee Lover Gift
eBay80 chars · item specifics
Cold Brew Coffee Maker 1L Glass Pitcher Stainless Mesh Filter Bamboo Lid NEW
- Capacity: 1 liter
- Material: Borosilicate glass
- Filter: Stainless steel mesh
- Condition: New
Walmart75 chars · key features · white main image
Cold Brew Coffee Maker, 1 Liter Glass Pitcher, Steel Filter, Bamboo Lid
- Stainless steel mesh filter
- Airtight bamboo lid
- Fits a fridge door
Shopify70-char SEO title · tags · alt text
Cold Brew Maker 1 L | Glass Pitcher, Steel Filter
TikTok Shop255 chars · attributes · video first
Cold Brew Coffee Maker 1 Liter - Glass Pitcher with Steel Mesh Filter and Bamboo Lid, Overnight in the Fridge and Your Morning Is Already Sorted
- Capacity: 1 liter
- Filter: Stainless steel mesh
- Hook line for the video caption
Same product, six different texts and the right picture for each - white main image where the marketplace demands it, lifestyle where buyers browse by feel, the infographic where video and scroll do the selling. Bars show how much of the title limit is used.