Generally, Libraries buy books from vendors. And we pay them to do it. This is a sort of time-honored practice in a capitalist society. Rob Brian was apparently “paid(Librarian admits he was paid by US bookseller)”:http://www.smh.com.au/articles/2004/04/26/1082831499637.html to sell books to at least one vendor. And he doesn’t feel that he did anything wrong. Apparently, Mark D’Arney intensely “disagreed(Death of a whistleblower)”:http://www.smh.com.au/articles/2004/04/25/1082831436783.html.