Unless Ebay has overhauled their reputation system recently, you will buy counterfeit/mislabeled goods from a merchant, and then either receive a bribe (as a partial return) to keep a five star rating or you have to open an incident to get a full refund, in which you can't leave a rating and tell other people to beware.

This allows terrible merchants from all parts of the world to push crap on unsuspecting customers.