Pricing calculator for marketplace sellers (Amazon, Etsy, eBay)
Reverse-pricing calculator fixes the margin leak problem for marketplace sellers.

Yet another fee calculator in a space dominated by Etsy's own native profit dashboard.
Etsy sellers and small e-commerce business owners
Etsy Profit Calculator · Alura · Marmalead
Reverse-pricing calculator fixes the margin leak problem for marketplace sellers.
Useful fee calculator, but spreadsheets and FeeStack already do this free.
Another AI product photo generator when Photoroom and Remove.bg already dominate.
Yet another marketplace competing with eBay and Facebook without clear differentiation.
Basic calculator when spreadsheets already handle this calculation freely.
Reverse fee calculation and support for tiered fee structures (including PeoplePerHour returning-client/lifetime thresholds) are practical touches you actually use when pricing gigs. It runs entirely in-browser with no data collection, which is a clear privacy win; the downside is the space is crowded and the extension needs ongoing updates as platforms change fees (withdrawal fees are explicitly missing).