Cost of living in Stuttgart (Germany) is 109% 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 466 prices entered by 63 different people.
For example, you would need at least 3,766KM (€1,929) in Stuttgart to maintain the same standard of living that you can have with 1,800KM in Zenica.