Service compare engine
Service check - a cost comparison engine for various services with a mobile front end - average cost in your area. So when the mechanic says - it'll be $2000 for the break job - you know how many hours it should take and how much it should be
That's a good idea, and one I've actually kind of piddled around with, however, I have the nagging feeling that it isn't the costs themselves that are egregious, but the diagnosis.
Example: I take my car in for a squealing noise it makes. Obviously, I'm not going to pay $3000 for a belt replacement, but I have no assurance that the "Miscalibrated Magnetostat" isn't the correct diagnosis. I'm willing to pay $3000 for a magnetostat recalibration, and the going rate may well be $3k, but all the mechanic really does is replace a belt.
Though, saying it out loud, perhaps I should just implement some kind of rating system for mechanics as well.