Cost of living in Essen (Germany) is 31% 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 269 prices entered by 35 different people.
For example, you would need at least €2,486 in Essen to maintain the same standard of living that you can have with €1,900 in Alicante.