If you load at least $ 10 onto an Amazon Anytime giftcard you get a $ 2 promotional credit applied to your account. It says you get the credit everytime you apply the $ 10 reload to the card so you can use this multiple times.
https://www.amazon.com/b/ref=amb_…B01K
I’m not sure if an Amazon Anytime gift card is any different than a regular Amazon giftcard… They link to a page where you buy a three pack of Amazon gift cards with greeting cards but that doesn’t seem right.