Cost of living in Cancún (Mexico) is 50% cheaper than in Aalborg (Denmark)
This comparison is lacking data. It provides a decent comparison, but it is not yet reliable. It is based on 245 prices entered by 33 different people.
For example, to keep the same standard of living that would require kr23,000 in Aalborg you would need to make just about kr11,468 (Mex$ 33,439) in Cancún.