6thave, it all depends on what theyre actually doing for the "sludge" problem... thee f.p. is a good price at 400, tbelt is right on the money for shop time.. and the ps leak depends on what theyre fixing.. when i do shop work(for a reg customer) i get 92$ flat rate i got by the mitchell labor guide.. u have to to run a business.. when i take care of friends,and the come to my house with a 6 pack, i usually go 500 for the day.. so whatever we can get done in a day plus parts.. its pretty fair and i do work pretty damn fast, worked in a dealer on the line for many years, producing 65-85 hrs a week..