Oh, by the way. Teachers and professors are not allowed to charge anything for materials they create for class. The fees charged for those materials are levied by the publisher and the the university book store. It wouldn’t be fair to make the teacher pay for the bindings, would it?
Let them get the money from their fabulous endowments or from cutting out useless basket weaving classes or eliminating administrative jobs in inclusion, diversity, or assistant to the assistant to the dean, etc.