After some speculation, talking with a few people, etc.
There is no new way as of now to buy cheap from other regions.(One Old way is semi-working)
Currently the Argentina store is down in its entirety to block people from doing it.
Is the VPN + Ethernet method working? No.
Is the spam method working? No.
Is the gift card method working? Certain stores still work but Argentina is for certain down.
If you have any questions please pm me, currently I would not recommend trying any of the methods even on a second account.