Cost of living in Białystok (Poland) is 11% more expensive than in Zrenjanin (Serbia)
This comparison has some inconsistent or sparse data. It already provides a reliable comparison but it is not bullet-proof. It is based on 20 prices entered by less than 5 different people.
For example, you would need at least 88,798 Дин. (3,221 zł) in Białystok to maintain the same standard of living that you can have with 80,000 Дин. in Zrenjanin.