I would not retire in the Ukraine or anywhere in the former Soviet Union, even though I speak the language. Many, probably most locals over there dream of retiring abroad. Girls are easier than in the US relatively speaking, but not easy or sex deprived enough to sleep with old wrinkled fucks, except for working girls who get paid by the hour and don't even pretend to like you.
Comparing prices in NY and these countries doesn't prove that it's cheaper and/or better to retire in the US than abroad. That part of the world is kind of cheap if you grow up there, have your own place to live and know where to get good deals, but it's more expensive than America if you are an American looking for the same quality of life you had back home.
I don't know what things will look like by the time I retire, but right now I could live comfortably in, let's say, Thailand, on less than I spend on rent in the NY area. I would be going out more, getting better non-pro girls, enjoying better weather, etc. The only problem is lack of passive income.