I've had a few good mechanics that would go over the work done with me. that's awesome, very informative, and i gain a lot of trust dealing with them.
My friend owns a shop, and i'm always hearing how frustrating it is that every customer thinks he's ripping them off, when in truth he's trying to give them the best recommendations or for the most part, just telling them the truth. They're always shocked when he quotes them labor fees but he cant do the work for free you know? he's gotta make a living somehow.