Cost of living in Opole (Poland) is 42% cheaper than in Abidjan (Ivory Coast)
This comparison is lacking data. It provides a decent comparison, but it is not yet reliable. It is based on 127 prices entered by 13 different people.
For example, to keep the same standard of living that would require 3,440,000 Franc in Abidjan you would need to make just about 1,980,360 Franc (12,882 zł) in Opole.