My A/C stopped working. I had Home Warranties to send someone down to check the problem. They found out that the air conditioning system as the compressor is full of mud, the evaporator coil is full of leaks from the dirt impacting the system and unit ran without freon, the condenser coils are dirty, water in condenser which rusted out from oxidation and blower dirty.

I'm waiting for the A/C guy out to give me the estimate of reparing it. I would like to know based on your profession, usually how much does it cost to repair? The reason I ask is to give me an idea roughly the cost so I can compare to this A/C guy estimate without overcharging me. Thank you for your help.

Have no idea without knowing the size of the condenser/coil and what would be required to repair it. If it's full of mud, leaks freon, was run without freon, best bet is to look at a replacement system...