haha totally off topic but...
In relation to normal book demand, demand for textbooks is really low. There is a very, very small demographic buying any certain book- 1) college students, and 2) college students in that exact class, so the quantities of the books they produce are very low. Couple that with the absolute requirement for textbooks, (college can't operate without them), and they can charge whatever they want.
The real crime, though, is that they control the used book market. You know your college textbooks that are like the 9th edition? They constantly release 'required' new editions of the same texts and stop producing the old ones, which forces people to buy the new editions, as some people keep their books, books get worn out etc. and there are eventually not e nough around to keep using that same edition.
it's a crime! my books were like 418 bucks this term.
and yes, I am literally so broke I have about .76 in my bank account, haha