Every time I try to convert a prepaid card to a gift card on Amazon it gets declined because of the temporary $1 test charge they do when added as a payment method. Then I have to wait a few days for it to drop off and try again. If I wait too many days (?), they will run the test charge again and I'm back to where I was on day one.
I'm sure there is a "right" way to do it but I've never been able to make it work as I want on the first try.
That sucks! I use the "EGift" option, but I select the "reload your balance" (https://www.amazon.com/asv/reload/order?_encoding=UTF8&ref_=...) item/link and was able to do it two days ago with a $50 prepaid. No odd authorizations or anything, had the amount on my Amazon balance within 2 or 3 minutes.
I usually end up with a gift card from some promo and it always seems to end up with $3.XX left on it. I want to use it up, but hardly anyone supports multiple card payments. Including Amazon.
What they do support, though, is buying a Amazon gift card of custom value, and making multiple payments with that.
https://jillcataldo.com/use_old_visa_gift_cards_on_amazon