I am trying to convince my native born Polish girlfriend to move back for a year to live/work/travel. I figure I will pick up the language far quicker than my current pace.
She's a little apprehensive about our earning potential there. The Polish Zloty does not appear to be the strongest currency and the average wage is half of some of it's other EU cousins.
Wages are way smaller than in EU countries, prices are pretty much the same. Real estate might be the only exception, but not by much.
Polish is a very hard language to pick up. Not only tongue twister, but full of exceptions and mind twisting rules. A pretty good example is counting objects, e.g. apples: 1-4 jablka, 5-21 jablek, 22-24 jablka, 25.. jablek. Yes, good luck with that!
The good news is most young and some mid-age people speak English, large cities welcome foreigners, and - if you have decent profession - you will do ok.
(Thanks again for writing this up, Jacques!)