Checkmate is a savings app with over one million users that have saved $$$ on brands like eBay.
The Checkmate extension automatically applies eBay discount codes, eBay coupons and more to give you discounts on products like 50 Mylar Polyester Sleeves For Modern US Currency Banknote / Postcard Safgard.
Checkmate users have also been loving these products from eBay.
Users have been saving products like this to their collections.