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 268 prices entered by 23 different people.
For example, you would need at least €3,279 in Liege to maintain the same standard of living that you can have with €2,900 in Zaragoza.