Stores that offer $5 credit usually don't sell things that cost $5. So it is nothing but a $5 discount code really. If they are really giving away credit for f

Stores that offer $5 credit usually don't sell things that cost $5. So it is nothing but a $5 discount code really. If they are really giving away credit for free that can be used wholly then they probably need to verify your identity e.g. a $0 credit card authorisation or something.