Cost of living in Essen (Germany) is 37% more expensive than in Alicante (Spain)
This comparison is lacking data. It provides a decent comparison, but it is not yet reliable. It is based on 259 prices entered by 31 different people.
For example, you would need at least €3,142 in Essen to maintain the same standard of living that you can have with €2,300 in Alicante.