I was just looking at a auto a/c repair shop a couple of weeks ago. 20+ years and the guy wants to retire. Used to be very busy, but not so much any more. It is known as the most honest shop in town. I've been going there for over 10 years. I've had older gm's so need a/c work a little more than normal.
I don't know much about the business. I didn't like the idea having to rely on someone else for the survival of the business.