There's a lot of counterfeit stuff on Amazon. I ordered a Pulltaps corkscrew and the chrome-plated metal part [1] was instead made of crudely bent sheet metal that didn't look remotely authentic. After that I mainly use Amazon for small household consumables. I also heard stories about counterfeit Mitutoyo calipers [2] so I didn't even consider trying Amazon for those.
[1] http://cellarsofwine.com/img/pulltex-pulltaps-double-hinged-...
[2] https://www.youtube.com/watch?v=KnDype-j3hk