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SellerSum
Free fee & profit calculators for eBay, Etsy, PayPal, Stripe
SellerSum is a suite of 13 free fee and profit calculators for online sellers — eBay, PayPal, Etsy, Stripe, Square, Whatnot, Depop, Poshmark, Mercari — plus a marketplace fee comparison hub and a food-cost calculator. Every rate is sourced from official marketplace fee pages with dates, a changelog tracks every fee change, and free email alerts notify you when fees change. No signup, no paywall.
Hey Product Hunt! I built SellerSum after running my own cross-border e-commerce print business and getting tired of guessing what marketplaces would actually take in fees. Every calculator out there felt outdated or paywalled, so I built 13 free ones (eBay, Etsy, PayPal, Stripe, Square, Whatnot, Depop, Poshmark, Mercari, and more), sourced every rate directly from the official fee pages with dates, and added a changelog plus free email alerts so sellers know the moment a marketplace changes its cut. No signup, no paywall — just the numbers. Would love your feedback!
About SellerSum on Product Hunt
“Free fee & profit calculators for eBay, Etsy, PayPal, Stripe”
SellerSum was submitted on Product Hunt and earned 0 upvotes and 2 comments, placing #59 on the daily leaderboard. SellerSum is a suite of 13 free fee and profit calculators for online sellers — eBay, PayPal, Etsy, Stripe, Square, Whatnot, Depop, Poshmark, Mercari — plus a marketplace fee comparison hub and a food-cost calculator. Every rate is sourced from official marketplace fee pages with dates, a changelog tracks every fee change, and free email alerts notify you when fees change. No signup, no paywall.
On the analytics side, SellerSum competes within E-Commerce and Personal Finance — topics that collectively have 44.5k followers on Product Hunt. The dashboard above tracks how SellerSum performed against the three products that launched closest to it on the same day.
Who hunted SellerSum?
SellerSum was hunted by Felix Oluwakeye. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of SellerSum including community comment highlights and product details, visit the product overview.
Felix Oluwakeye