Undergrad here; not true. I'm currently building a scanner because I hate carrying my textbooks around campus, and any one book is heavier than my laptop. I did search for pre-existing scans, but most of them don't exist. By the way, scanning is only $150+ if you count the cost of a camera. If you already have one for other reasons, or can borrow one, you can make legible copies for free, or spend a little to make a platen and fixed camera mount for better copies in less time.
