I guess I've been lucky. 2 trips there for this car (last 240 was 5 years ago).
First trip, I pulled a center console, heater panel, and the radio (just for grins) out of a car in the back and he charged me $75 for everything. I only had $70 in cash, so he settled for that.
2nd trip, 2 weeks ago, I needed a new turn signal switch. My high beam wires had corroded. On the phone I was told $75 by an asian guy. When I got there, Mr. Labcoat went in the back to find one for me, and had a couple. One was broken (the other wires, I only needed the high beam portion), so he said he would give me a discount for it. I asked how much, and he said, normal price $45, but $20 for this one.
Aside from his young assistant asking if my C6 corvette was a cobalt, I've had good experiences.