I'm jealous you got to chat with the OG (BowTiedMara).
Another example but not from BA city:
My friends (no kids single late 20s working as software engineers locally) make around 2500 to 3000 usd a month (around 20/H usd). Rent is around 300 to 400 for a 3 bedroom apartment in GBA ( Greater...
20 usd/h is enough to live comfortably here.
Also been to Córdoba and Mendoza they are a bit cheaper and beautiful cities, but Spanish is more necessary.
I could give you more info if you want ( I'm an argie living in BA and earning in usd in the US)