gold is xbox online terms. it costs money to play online with xbox 360.
as for ps3 from eu. i play from Denmark. and i have bought it.
Make a new psn acc.
add american country and postcode and state (91210 is a classic :D)
then, you should be able to buy it off that psn-users PS Store access.
However, if you had trouble like me, with adding a non-american credit card to your acc. you can go to amazon.com and buy this:
When i tried to buy it with my normal country and so on, it said it couldnt sell me this item, unless i was from america. so i changed my country and so on. and then it allowed me to do it. :)
and the 10$ thing as well. then you get 2 codes (instantly) and you can add those to the acc inside the store. then go buy it and download it instantly.
You really should do your research before typing..... https://www.amazon.com/50-PlayStation-Store-Gift-Card/dp/B004RMK4P8/ref=sr_1_3?s=videogames&ie=UTF8&qid=1504012801&sr=1-3&keywords=playstation%2Bgift%2Bcard&th=1
notice in title it says: digital code Literally used this method 2 days ago