I have some friends who detail at the Benz dealer ship and one of them introduced me to a star certified mechanic who does work on the side. He is really good what i have heard and seen. I need to have a head gasket job done and he told me he would do it for $600 labor and i will get the parts. I was wondering, do you guys think this is a good fair price for someone doing this job on the side? Or should i try to go else where?