Twelve years ago the company I worked for was paying data entry people in Reynosa, MX about $7-8/hour.
Mexico’s car industry - Steaming hot
"What is Mexico’s appeal for carmakers? Low labour costs are a major factor. Wages and benefits are running at an estimated $10 an hour for assembly-line workers. This is high by Mexican standards, but barely 20% of the prevailing wage in neighbouring America."
This figure was in a WSJ article this past week.