There are two ways to charge for publishing a book, 1, buyout: that is, the publisher buys out your work, how much it pays you at one time, and how much you buy later, whether it is a loss or a gain has nothing to do with you. 2. Royalty: book sales x royalty x book price = return. Royalties are generally between 5% and 10%. For example, the price of books is 10000 copies, and the royalty for printing 30 yuan is 8% = 24000 yuan. More than 98% of poor writers don't make money!