hi bob, i don't think he's selling anything. i've looked over his site before and i actually am right on board with a lot of the things he says. i haven't read it slowly to look in detail for a sales pitch or a link to purchase something, but i didn't recall his having a sales pitch per se, and i didn't find anything obvious at a glance today.
his reference list looks pretty good (without checking every one) although a few are obviously not peer-reviewed journal sources. out of almost 50 references, one or possibly two of them seem to have a spiritual leaning. the site has a much higher level of spiritual representation than his research. but if that's his route to his answers, power to him, i say