Cost of living in Ibadan (Nigeria) is 15% cheaper than in Zaragoza (Spain)
This comparison is lacking data. It provides a decent comparison, but it is not yet reliable. It is based on 347 prices entered by 22 different people.
For example, to keep the same standard of living that would require €2,100 in Zaragoza you would need to make just about €1,788 (740,319 ₦) in Ibadan.