Cost of living in Mazatlán (Mexico) is 5% cheaper than in Łódź (Poland)
This comparison is lacking data. It provides a decent comparison, but it is not yet reliable. It is based on 292 prices entered by 35 different people.
For example, to keep the same standard of living that would require 6,700 zł in Łódź you would need to make just about 6,364 zł (Mex$ 32,762) in Mazatlán.