Assuming you are from the U.S. the big problem retiring before medicare age is the cost of health insurance, in Argentina you can get health insurance at reasonable rates. It gets a lot more expensive after 65, whereas in the U.S. medicare kicks in. So for the early retiree I think Argentina is a reasonable choice because of health insurance, other costs aren't that much different, but you can live in B.A. without a car, public transportation is cheap. For the over 65 group your health care will probably cost more in Argentina, overall about the same as the U.S. or perhaps a bit more.
