Now there is a way: https://www.yourmechanic.com
This may not apply in any town, where real estate prices may be higher or lower.
But at least it's a place to begin shopping.
If your mechanic's price is a lot higher, start checking other mechanics' prices locally. You may find that there are better deals available.
Maybe you need a different mechanic.
The great thing about the Web is that price competition can do its work.
High-priced operators can't easily exploit buyers' ignorance of better offers.
Now they have to provide better service to match their higher prices.
We need more sites like this one.
Maybe there's a site like this one in our town for mechanics.
If not, maybe someone should start one.
Creating a site like this would be a great home-school project for learning about business.