Yes, we do accept gift cards from Amazon and Walmart. We accept amazon.com (in USD) and amazon.de (in Euros) gift cards and a few more but we prefer Amazon.com and Amazon.de as that can be processed more swiftly.
All our prices on the website are in USD but you can check the conversion at xe.com and send us the gift card in Euro if you want to pay via Amazon.de giftcards.