This is a problem for anything Amazon sells, not just books. I play board games and counterfeit board games are very very common. So much so that I wouldn't recommend anyone buy a boardgame from Amazon. Buy them from Cool Stuff Inc, Miniature Market, Cardhaus, etc. instead.
Incidentally, just this past week we allowed our Prime membership to lapse and don't plan on renewing it. With problems like this one, its just not worth it anymore.