That's nothing. In '74 he hired MGM to come up to northwest Oregon and produce a video series of him explaining and demonstrating all performance and safety aspects of professional timber falling. He then sold copies of the video to agencies like the U.S. Forest Service, Bureau of Land Management, and private large logging companies. The videos I believe were $2600.00 each.
I met the man in person though on a training session in Bend, Or. in 1996, and he's a great guy in person with a ton of knowledge.