Offerlog – buy or sell anything on your own terms
Craigslist meets Google Forms, but marketplace fees already solved this.

Yet another marketplace competing with eBay and Facebook without clear differentiation.
Resellers, flippers, and small-scale online sellers
eBay · Facebook Marketplace · OfferUp
Craigslist meets Google Forms, but marketplace fees already solved this.
eBay and Poshmark already have offer buttons, so the "first truly offer-based" claim is dubious.
Stripe-compatible payouts at $0.002 vs Stripe's $9,400/month burn.
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).
Self-hosted domain "for sale" landing pages, but Squadhelp, Afternic, GoDaddy Auctions already own this.
Reverse-pricing calculator fixes the margin leak problem for marketplace sellers.