Plumbing Costs Wwth RSMeans Data 2017 (Means Plumbing Cost Data)

Difficult to learn but has paid for itself by about 100 times compared to the way I used to estimate. it's difficult for mechanical engineers or architects to argue when you cite the page number and pricing.

book arrived in new condition. I'm using to help me with my bids,not relying on it completely. But it's a great starting point.