Again, as somebody who publishes books, I assure you that Paizo doesn’t pay $10 to print a book.Ballparking based on the "20/20/20/40" rule where you spend 20% on printing, 20% on distribution, and the store/ retailer gets 40% with the publisher getting 20% to offset costs. Because it's a good baseline. With a $50 book that's $10 to Paizo and $10 to the printer.