But if everyone that receives a counterfeit item returns it, that costs Amazon a lot of money (they have to pay to return it and pay to ship you a new one - all

But if everyone that receives a counterfeit item returns it, that costs Amazon a lot of money (they have to pay to return it and pay to ship you a new one - all on their dime). By not returning it you are just playing into their hands. Not only did they not have to send you a legitimate item, that they can now sell to someone else, but they didn't have to pay the roundtrip shipping fees (plus someones salary to deal with it when they get it back). And this isn't even touching on being nice to other people. That counterfeiter can keep on sending blocks of clay to other unsuspecting people and you did nothing to help stop them.