Re: parts mark up?
generally, a repair shop will charge 100-150% parts mark up. They do because they have to ,this keeps the doors open. This mark up pays everyone's payroll ,taxes, cost of doing business which is a lot.The cost of labor charged alone will not keep any repair faculty afloat.
You can always shop around to see who can give you the best deal. You can also ask them to use the parts you already bought at a discount price, but I doubt they will. The parts you might have bought might not be up to the repair facilities standard thru experience,if they install the parts you provided and they fail?Then your out there in the world trashing the installer because in your mind, they installed them incorrectly.Comes down to this. A repair facility guarantees, not only workmanship, but also the parts they installed.
Sometimes, Im forced to install a customer supplied part. They get a written warning, no guarantee or warranty it will even work after its installed. If it does not, they get charged again.
Or, you could do it yourself? Wish you well.