Cost of living in Latina (Italy) is 24% 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 273 prices entered by 29 different people.
For example, you would need at least €2,363 in Latina to maintain the same standard of living that you can have with €1,900 in Alicante.