Lots of those shop guys are shameless ********.
*Off on a tangent* It's not just automotive. I came home from a trip recently to find that my natural gas house furnace had failed. It was just pure luck that I came back when I did and all the plumbing wasn't froze up already!!!
So I do some troubleshooting and decide that it has a cracked heat exchanger, which is under warranty because I had the furnace installed new not all that long ago. I called the installer and he wanted $500 to fix it and I'm thinking to myself, gee, that's what I'd expect to pay if there was no warranty at all!
I called another plumbing and heating shop and explained my diagnosis and what the installer quoted me; they said my diagnosis sounded correct and if they'd do it they'd charge $200!
I said how about if you just get me the parts and they agreed to do that... better yet!
So I got the replacement heat exchangers free under warranty and put them in there myself. Take that MFer installer! I'm gonna badmouth that sucka at every opportunity- if he wouldn't have been so greedy at the outset I wouldn't have thought twice about it and he'd have had the job. That's funny, I bet he doesn't have 8 years of med school loans to pay off but he sure charges like it.
I kept the house reasonably warm while all this was going on with several space heaters.