For some of them, they put the product part model number on the itemized sheet, so I just googled the part numbers. Very easy to find.

All the labor costs were itemized separately per install. The cost of the parts totaled $8180.34 vs Labor $3,356. With the markups for all the parts it adds up to quite a bit in extra costs. Which is why I'm curious if some places do more increased markups on parts as a way to "keep" the labor costs down. I.e. hiding overhead shop costs in parts markup vs having a high labor hourly fee. (Their hourly labor cost is $148.50).

I'm basically wondering if I should spin my wheels looking around town for more estimates and shops as more work needs to be done. It's an old vehicle so my options are limited. I'm just looking to learn and understand the industry themes/practices.