That range is accurate for the illegal aliens in southern California. What do you think pay ranges would be without wage suppression due to illegal aliens? How much money would stay in the country if illegals weren't sending it home? How hard would it be to round these guys in the age of Google Maps with Street View? Scroll left in that street view a few dozen times and you will see a good 50, there were more earlier in the day.
Illegal aliens that do carpentry work can make $150-$200 per day. Most of these people don't pay income taxes and actually may even have their families on welfare.