Cost of living in Mannheim (Germany) is 90% more expensive than in Afyonkarahisar (Turkey)
This comparison is lacking data. It provides a decent comparison, but it is not yet reliable. It is based on 208 prices entered by 15 different people.
For example, you would need at least 5,890TL (€958) in Mannheim to maintain the same standard of living that you can have with 3,100TL in Afyonkarahisar.