Cost of living in Thessaloniki (Greece) is 60% 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 641 prices entered by 61 different people.
For example, you would need at least 4,808TL (€789) in Thessaloniki to maintain the same standard of living that you can have with 3,000TL in Afyonkarahisar.