Cost of living in Ravenna (Italy) is 19% more expensive than in Zaragoza (Spain)
This comparison has some inconsistent or sparse data. It already provides a reliable comparison but it is not bullet-proof. It is based on 210 prices entered by 15 different people.
For example, you would need at least €2,388 in Ravenna to maintain the same standard of living that you can have with €2,000 in Zaragoza.