Buy smart. Sell with ease.
Find a great deal without the hassle.
Discover listings from private and professional sellers, compare offers and trade in one clear marketplace.
Discover
Popular categories
Marktplaats
New listings
The newest listings on Koopzeker.
We are filling the shelves
There are only a few listings online. Be the first to create one or check back soon for new products.
Clear listings
Price, duration and seller details in one place.
Built around trust
Profiles, reviews and transparent information help you decide.
Compare quickly
Search and filter to find what suits you faster.