That's not net, that's cover price of the book as offered on the website. (dearauthor.com)
Considering that a fax machine is apt to need service as frequently as a laser printer or an electronic typewriter — about one and a half times a year — learning to perform even a minor repair (for example: «Soldering Tips and Techniques») will sooner or later cover the price of the book. (inc.com)
In 2001, J.K. Rowling brought the textbook used by Harry, Ron and Hermione to life in a 128 page small format book with 80 % of the cover price of each book donated to Comic Relief. (bookbrowse.com)