Set Texts
Books someone was made to study, whether or not they wanted to.
5 volumes
A N.E.W.T.-level Potions textbook. The printed text is unremarkable. The previous owner's handwriting in the margins is the entire plot of the sixth novel.
A standard Hogwarts textbook classifying the magical creatures of the world, and one of the few fictional books you can order tonight and have on your desk tomorrow.
The standard history of the wizarding world, on every Hogwarts book list, and the first place Harry ever reads about himself.
A textbook that has to be restrained with a belt, attacks anyone who opens it, and can only be calmed by stroking the spine. Flourish and Blotts keeps the stock in a cage.
A history of the game from the marshes of Queerditch to the modern professional leagues, borrowed from the Hogwarts library and never quite returned on time.