Tell us how would you level the playing field pray tell?????
OK. Let's look at it from a "level" playing field. Something that is fair for both parties.
When you take the vehicle into the shop they diagnose the problem. Some shops charge for this, some do not. Their choice. If you don't want to pay for the diagnostics, take it to a shop that does not charge or one that
"credits" the diagnostic charge when the work is done.
After the problem has been diagnosed, that is where this situation comes into play (the "flat rate" as opposed to anything else).
Let the shop use the book. Look up the job and give the quote. However, isn't this called an "ESTIMATE"?
Do the job. If it takes far less time then the book says, like taking only 1 hour to do a "book" time of 3 hours, then charge accordingly. Just because you gave a quote for an "estimated" price does not mean you HAVE to charge that.
You could charge less, since you took way less time.
Now, for those times when it takes longer, there is already something in place for that (at least there is here). On all the estimates I have gotten (or seen, it is required here by law) there is a statement that says they can exceed the estimate by XXX dollars if needed without having to contact you before they do the repair. However, it is going to cost above the increased amount, they have to contact you before they continue to either get your permission or stop the work.
This seems like a no brainer ... it is much more fair for both sides.
BTW - No, I do not turn wrenches for a living. However, I have worked as a self-employed person since the early 1970's. I have done several different types of work over the years and most of them have been the type where I have to give "estimates". I do not use a "book" for the price, but I do have to use formulas or experience for the estimates.
When I find that a job is easier then I thought, I do charge less. This makes the customer very happy and I feel better, too. It also gets me more referral business. Word-of-mouth is so important.