Cost of living in Latina (Italy) is 21% 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 197 prices entered by 28 different people.
For example, you would need at least €2,667 in Latina to maintain the same standard of living that you can have with €2,200 in Alicante.