Cost of living in Benidorm (Spain) is 69% 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 161 prices entered by 14 different people.
For example, you would need at least 2,696KM (€1,377) in Benidorm to maintain the same standard of living that you can have with 1,600KM in Zenica.