Cost of living in Liege (Belgium) is 13% more expensive than in Zaragoza (Spain)
WARNING! This comparison is based on only a few data points. At this point it is only a guess. It is based on 208 prices entered by 21 different people.
For example, you would need at least €2,932 in Liege to maintain the same standard of living that you can have with €2,600 in Zaragoza.