Underpriced AI
Cross-Listing · Listing Optimization · Product Research
Pricing
Free to start
Freemium
How it works
—
What it does
Scan-to-list app + free Chrome extension that autofills marketplace listing forms; eBay API publishing; sale detection alerts.
Platform compatibility
Where it actually works, and what it does badly. Updated when vendors ship changes, not when we find time.
Depop
UK, US · no official API
Depop cross-listing with paste-kit fields and one-tap photo sharing; eBay API publishing; sale detection.
Etsy
Global · official API
Mercari
US, JP · official API
Chrome-extension form autofill + scan-to-list; supports Mercari cross-listing and sale detection.
Poshmark
US, CA · no official API
Vinted
EU · no official API
Cross-listing to Vinted alongside eBay/Poshmark/Mercari/Depop; Chrome-extension autofill.
Whatnot
US, UK, CA · official API
eBay
Global · official API