Same boat. The shop I managed was $150/hr, but that's high for my region. North of dealer prices prices which last I checked were $125-140/hr. Owner was hard to talk to about business - had his own ideas about how things worked and not much to back them up - hence why I left. Shop flopped a few months later.
I charge $75-100/hr depending on the job, the vehicle, customer disposition. That's a bit high for indie work, but I work fast and I work clean, and for any less I'd rather spend time with my family.
I agree, if shops in your area are charging that much then you should definitely up your rate to $75 at least.