I had one professor who demanded we buy a BRAND FUCKING NEW PDR every time it came out. And carry it to class. And we barely used it.
PICTURED ACTUAL SIZE
It was one of the first things I ever put on a credit card because on my wages I could never buy it outright.
The biggest kick in the teeth was the book buyback table across from the bookstore, where they'd look at the perfect-condition $300 book you'd just bought a few WEEKS before, in some cases, and tell you they'd give you $2 for it.