I took my car to the skeevy part of town yesterday to get the broken AC looked at. (Why are radiator/AC shops always in the skeevy part of town?)
Diagnosis? There was a loose connection to the unit, and the system needed a recharge.
Cost? Twenty bucks!*
*I tried to slip the guy an extra five, and he wouldn't take it. He told me to put it in the gas tank. I think I want to marry him.