Two possible problems
1.  If you purchase these to give as a present, the person receiving the card needs to have an Amazon account to use it.  It could be a problem if your were giving the gift card present to a child without an Amazon account.<br />2.  If the adult does not have an existing account, they must first open a new one using a credit or debit card, then add the full amount of the gift card.  In other words you cannot just use the Amazon gift card to make a purchase  without opening an account with a valid credit card.
Rating: 2 stars