
The cost of living in the Cancún area generally is higher than much of Mexico primarily because it is a beach resort area and prices are geared toward tourists.
Your cost of living in this region will depend upon the type of lifestyle you want to have and may be similar to what you left in your home country, if you want to maintain the same kind of lifestyle.
To compare the cost of living between Cancún and where you live, visit Expatistan or Numbeo, two popular crowd-sourced cost of living websites.