Cost of living in Naples (Italy) is 8% cheaper than in Andorra la Vella (Andorra)
This comparison is lacking data. It provides a decent comparison, but it is not yet reliable. It is based on 438 prices entered by 35 different people.
For example, to keep the same standard of living that would require €3,300 in Andorra la Vella you would need to make just about €3,049 in Naples.