My bill for adding a couple lbs of R-12 was $240, $100 of which was for the R-12. My mechanic evacuated and recharged, billed about 1.4 hours. But now that I think about the 1.4 hours... wasn't that just letting the pump/engine run while he was eating lunch?? I guess I should have gone to the A/C people instead of the Audi mechanic.