Cost of living in Orsk (Russia) is 58% more expensive than in Zhytomyr (Ukraine)
WARNING! This comparison is based on only a few data points. At this point it is only a guess. It is based on 73 prices entered by less than 5 different people.
For example, you would need at least 42,696₴ (руб 101,256) in Orsk to maintain the same standard of living that you can have with 27,000₴ in Zhytomyr.