I am not sure WHICH apartments in Miami are cheaper than those in BsAs- but they sure arent ones I would want to live in.
I have spent a lot of time in Miami- and yes, electronics are cheaper there- but its not a city I would choose over Buenos Aires for many quality of life issues.
In Miami, even in crappy suburbs of Miami, prices for a 3 bedroom condo of $1 million to $2 Million are very very common.
And these are new, shoddily built concrete buildings, with no character, craftsmanship, or soul.
Me, I go by a lot more than price per square meter- and you can still buy an apartment in BsAs that is 100 years old, with 4 meter ceilings, stained glass, hardwood floors, with a marble lobby and brass railings, for $200,000.
In fact, if you go out of the tourist crescent of San Telmo/Recoleta/Palermo, you can go cheaper and get more.
In Miami, you get a slot in a concrete ice cube tray. I just looked at Miami real estate for sale online, and I think your dollar goes a LOT farther in Buenos Aires. $200k in Miami buys you 1 bedroom tiny cubbyhole in any desirable neighborhood, or someplace like Kendall or Pembroke Pines.
You ever been to Pembroke Pines? Yeccch.
I think part of what is happening, which relates back to bringing money home, is the slow decline of the isolation of Argentina.
Globalisation means global pricing- especially in neighborhoods like Recoleta, which are globally desirable. It used to be the old "culo del mundo" way of thinking ruled, the backwater that no one ever knew about. But now, Italian filmmakers and New York Fashionistas buy places here, and inevitably, some things start to be priced globally. The internet works both ways, you know.
Obviously, real estate is always LOCAL, but global thinking on value affects even real estate, especially in desirable neighborhoods.
And once that genie gets out of the bottle, its never going back in.