It seems you haven't priced text books recently. Typically, they aren't published by charitable organizations
It's not the cost that made me blink; it was the sheer size
of the darned thing. It better have lots of purty pictures to go with all them words!
I am hoping for a Kindle version, though. The ability to do quick searches (especially in such a large block of text) beats a printed index.
(My college major required buying lots of books, some of which were only used for a single lecture. That was roughly twenty years ago, and if costs have kept up with inflation...holy cow.)