sleepy If he put it on the net NOBODY would buy it. Plain and simple. People would be sharing the file with everyone and their dog.
These days $15 is nothing to spend for a book. And personally I would rather pay that $15 to Ray than all the money I handed over to the borg for their bit of trash.
Reality is that there are a lot of other people who have written books about the WTS and they too sell their books.
You want to read it for free try your local library. Many of them do carry it or will stock it if you ask. So it can be read for free. It just requires a bit of effort on your part.