It is not the currency exchange rate that determines. It is the local economy, job market, local culture and local laws. For example, 1 USD = 26,357.00 Vietnamese Dong. Have you ever seen a Vietnamese model? They have good economy. Vietnam's unemployment rate is 2.2%. Also, local laws and culture don't encourage porn. Colombia's unemployment rate is currently 8.6% and it used to be much worse in the years earlier. In nearby Venezuela, currency exchange is 1 USD = 20,646,372.58 Bolivars. Unemployment is 5.6%. But you don't see models operating out of Venezuela due to local laws.
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