The check will have an "accidentally" or mutually agreed higher value than the price of the item, so the scammer asks the victim to wire the extra money to some third party as soon as the check clears. The check typically clears after one or two days, but the fact that it is counterfeit is not detected until several days or weeks later, by which time the victim has sent the item and the "additional money" to the scammer and his representative. Most banks will hold the victim accountable for the value of the counterfeit check.

A variation on the eBay scam involves sending a request for payment for an item that the alleged seller does not own but claims to have sent. Since actual eBay item numbers are used this has been a nuisance for legitimate sellers.