> Once you grab your dubious device, the seller has already got your bucks in exchange of a fake device. Unless you're buying your flash device on the street a

> Once you grab your dubious device, the seller has already got your bucks in exchange of a fake device. Unless you're buying your flash device on the street and paying cash, you likely can return it or initiate a chargeback. And even if you can't undo the purchase, it's better to know whether a device is fraudulent before you start filling it up with real data that you don't want to lose.