“How much does it cost to publish my book in print at Amazon’s Kindle Direct Publishing (KDP, formerly CreateSpace)?”, we get asked. Well, it’s free, and you set your price, whatever you think the market can bear. When someone buys your book Amazon deducts their printing costs from the price you set for your book and you get the rest. There’s more information here. If you click on the yellow Download button you get a pretty cool Excel file and you can input various numbers and figure your costs and profits.
