Congrats on the move. I definitely think there has never been a better time to pick Xbox as your primary console, between the higher GPU/CPU specs, the value of Gamepass, and the huge number of 1st party studios MS will soon have assuming the Bethesda deal is approved by all antitrust regulatory bodies.
I'm not sure if its just in Argentina but here in Colombia, both Xbox and PlayStation games cost about the same and they really are that expensive. It's like they convert the 60 USD price tag to local currency (in countries with much less purchasing power so its not really the same) and then add an extra for the retailers to make profit.
Steam on the other hand offers much better pricing here.