Cost of living in Kaliningrad (Russia) is 51% cheaper than in Zaragoza (Spain)
WARNING! This comparison is based on only a few data points. At this point it is only a guess. It is based on 195 prices entered by 26 different people.
For example, to keep the same standard of living that would require €2,700 in Zaragoza you would need to make just about €1,323 (руб 94,909) in Kaliningrad.