23. When a book mentioned in subparagraph 3 of the first paragraph of section 14 is acquired, the institution may require that the accredited bookstore, which is obliged to do so, include the following information on the bill:(1) the list price or net price of the Canadian publisher;
(2) the markup added to the net price;
(3) the list price or net price and the reduced price at discount sales referred to in section 16.