Cost of living in Brno (Czech Republic) is 35% more expensive than in Zenica (Bosnia and Herzegovina)
This comparison has some inconsistent or sparse data. It already provides a reliable comparison but it is not bullet-proof. It is based on 561 prices entered by 61 different people.
For example, you would need at least 2,289KM (30,132 Kč) in Brno to maintain the same standard of living that you can have with 1,700KM in Zenica.