Although it's nice to know what others get it can be pretty irrelevant to what YOU are doing.
My best advise is to take a bidding and estimating Seminar (full 2 day) with Charles Vander Kooi of Vander Kooi and Associates, 303-697-6467 or Jim Huston of Smith-Huston, Inc., 800-451-5588. You must be prepared with solid book keeping numbers when you go, believe what they tell you and practice it everyday the rest of your busines life when you leave.
Their clients that follow through, are the quietly succesful ones and business survivors. Believe it!