电邮发卡，亚马逊自营，屌啊！

https://www.amazon.com/gp/product/B075Y8WBTS/

引用:

Special offers and product promotions
For a limited time while supplies last, save $15 when you spend $100.00 or more on select App Store & iTunes Email Gift Cards offered by ACI Gift Cards Inc., an Amazon company. Enter the code ITUNES15 at checkout to receive discount. 1 per customer. Enter code ITUNES15 at checkout.

结账时输入ITUNES15立减15刀，每顾客限用一次。

可以，支持银联。