The guys charging T&M are working out of their garages.
Those with a flat rate system own a shop.
If you like your garage, stay with T&M.

We struggled with T&M for years. People don't like you telling them you charge $100 bucks and hour and they make $20. They have no clue of the costs of business and don't care to hear about it from you. I tell them it costs so much to do so much. New customers don't see a difference in quality, just the bottom line costs. They assume all work is done the same.

You need clean, uniformed, courteous, SALES people who can pull out a price on work while they're on site. This provides consistancy. I lost a good customer by charging different show up fees, just because I couldn't remember what I charged them on previous trips. They actually kept the receipts and compared them. Caught in the act (of ignorance).