Cost of living in Mar del Plata (Argentina) is 34% cheaper than in Zapopan (Mexico)
This comparison has some inconsistent or sparse data. It already provides a reliable comparison but it is not bullet-proof. It is based on 504 prices entered by 37 different people.
For example, to keep the same standard of living that would require Mex$ 53,000 in Zapopan you would need to make just about Mex$ 35,120 (ARS $50,539) in Mar del Plata.