I got mine during a local seminar. The Complete Business Manual for Landscape, Irrigation, & Maintenance Contractors and the Production book. I think he has one for $45.00 that includes both.
He was a great speaker. I may order that DVD.
At the time I was the sales guy for the company and no clue on how to estimate commercial work. It helped me and I still look at it 3 or 4 times a year and I read the book twice. Might be time to read it again or atleast portions of it.
He is geared more toward hardscape these days.