Gm everyone, I have a friend want to sell me there 2011 Hyundai 4.6. She said she don't want to fix the AC compressor that is throwing out hot air. The temperature hand goes to hot and shut off. I know the thermostat may need to be changed. I was wondering how much would it cost to replace the Compressor and replace the Freon. The person want 3800 obo. What would be a good offer to offer this person. It has 112k miles on the odometer.