Cost of living in Bern (Switzerland) is 200% more expensive than in Zenica (Bosnia and Herzegovina)
This comparison is lacking data. It provides a decent comparison, but it is not yet reliable. It is based on 283 prices entered by 36 different people.
For example, you would need at least 5,704KM (CHF 3,315) in Bern to maintain the same standard of living that you can have with 1,900KM in Zenica.