Pretty sure you can buy PSN cards from different regions off Amazon, they just email you a code, so it shouldn't be a big deal. Alternatively, I know you can do it on G2A.com, but they do a little mark-up on them. Sometimes it's only like 5% but sometimes it's more than 10%. I've seen $20 cards on sale for like $24.86 or some junk. That one is not worth it. But those options are available