Just came across this deal on Reddit. This card is only for North American accounts.
These codes will stack, so you can buy multiple cards to last years.
This is quite a cheap price for a 1 year subscription to PS+. Many are saying this has been the cheapest price in a while.
Instructions on making a NA account can be found here: http://www.pushsquare.com/news/2018/12/guide_how_to_create_a...
Edit: Was previously $29.79USD. Now $31.99USD. Still a good price.