The selling price of a book is dependent on its production cost. The Royalty Calculate feature on the Prachi Digital Publication website helps you know the Author Copy Cost, Author Profit & Maximum Retail Price of your book based on the Number of Pages & Book Size. With this, you can calculate and set the Maximum Retail Price of your Paperback Book according to the profit and calculate your estimated net profit yourself. And you can also get information about the subsidized cost price at which additional books will be made available to the author.