I didn't know we can buy Amazon gift cards with BitPay. Do you know if it's only gift cards for the .com version or there are others too?
Bitrefil also has Amazon voucher but it depends on your country (I think it has only USA)
https://www.bitrefill.com/refillThe only method I've tried is via bitpay's desktop app.
With gift cards it is possible to print out a sheet of paper showing the gift card's bar code. A store clerk can scan, or use the cards # number (and confirmation code) to allow a person buying a gift card online to purchase things in stores @ physical locations.
Another method is loading the webpage showing your gift card with its barcode on a smart phone and (I think) the cashier can scan the screen of your smart phone to confirm. I haven't tried that but for those who lack a inkjet or laser printer, its an alternative method.
Thanks for the info on bitrefill. Its nice to know amazon GC's aren't completely centralized.