Amazon has announced a larger, more expensive Kindle DX for textbooks and periodicals, which it will test-market to college students.
Last year I paid $500 - the price of a Kindle - for my textbooks. I didn't open most of them. Returning them was a pain in the ass. I hate going out and buying them, period. If there's a device that lets me buy books each semester for only $50 total, or - not to suggest illegal activities - that lets me download them via my college's student hub, then I'm going to take the DX and never let go of it.
College students know a good deal when they see it.