I agree with the advice of finding a good, reliable mechanic. Ask around and you will find one. Fortunately I can handle most of the repairs myself, but I do have a mechanic for the time consuming and special tool jobs. He doesn't mind when I get the parts myself. If you shop e-bay, Auto zone and Pace in Tampa you will save a bunch. For example the compressor $340, evaporator and drier as quoted by Pace, the price is $199.99 plus shipping for the evaporator. You should
also replace the receiver/drier when replacing any A/C component. The price of the receiver/drier is $32.00 plus shipping. The total price for everything should
be roughly be $250.00 that includes shipping.
Pace Compressors
Tampa, FL
813 888-7991
I paid $149 for the power steering pump from auto-zone. So you see the big numbers are not there unless you rely on Lexus service then, Selling it would be your only alternative.
Good Luck to you