For resellers and bargain hunters
Buy under market.
Sell at market.
Undermark scans various online second-hand marketplaces for anything you type, works out what it normally sells for, and shows you only the listings priced well below that.
Cancel anytime. No AI guesswork: real asking prices, real links.
How it works
1Type what you want to flip: a lens, a bike, a car, a console.
2Pick how far under market it has to be, say 25%.
3Get a list of those listings with links. Message the seller first.
Why Undermark
- Several marketplaces, one search. Undermark checks various online second-hand marketplaces at once, so you don't have to.
- Real market value. The typical price is worked out from what comparable items are listed for right now.
- Only the good ones. You set how far under market a listing has to be, and junk like accessories or parts is filtered out.
- Straight to the listing. Every result links to the original ad so you can message the seller.
Undermark
€6.99 / month
- Unlimited searches
- Market value per site
- Your own discount threshold
- City and radius filter
- Cancel anytime