I won't give a price breakdown of every thing. I only give the package price and I tell the clients that too. I consider that an abnormal request from a possible pita.
We have to have some wiggle room to cover problems that may come up with the job and we need to make a profit.
I learned 20 years ago that people will take a detailed estimate list, go buy the stuff and either do the job themselves or get a friend to do it for cheap.