Anywhere else in the world I would have said 'of course'. But since moving downtown I was surprised to see that Capital is not that much more expensive than the Gran Buenos Aires, limiting the comparison between livable areas of the GBA for the average expat.
Taxes are lower -- there is on ARBA on properties, there is no ARBA on your income --, gasoline is cheaper. Bus fares cost usually less because there is no crossing of the city limit. Taxis and remises are also cheaper for the same reason.
Utilities are subsidized even in the wealthier neighborhoods.
ABL looks cheaper... we live in a place which is twice as much as the apartment we lived in for the past two years, and the ABL is nowhere double as the old one.