At that point they are effectively pricing based on the work accomplished rather than the time taken to accomplish it. That sounds justified so long as it's tra

At that point they are effectively pricing based on the work accomplished rather than the time taken to accomplish it. That sounds justified so long as it's transparent. Certainly as a customer if my car is in the shop for a week I don't really care how long any individual step actually took, I just care how long it takes to get my car back.