I have an appliance repair business. I charge for labor and parts. I mark up my parts a flat percentage. How do I respond when a customer wants me to breakdown the cost of labor vs parts? Because I know what they are really trying to do is see if they can find the part cheaper on the internet.
I have had to get a lot of work done becuase i dont know how to myself. I have learned if i want to troubleshoot, find the correct parts, order those parts, and have whoever i called install those parts i can save a few bucks. Obviously if the plumber or whoever carriea the part i expect a markup…just like a store except this one comes with the install.
If tour customer does understand this they are an idiot. Unless your markups are insane just give the guy the invoice. If they are insane and you didnt know i guess you will find out.