Editorial policy

Where the numbers come from

Examples come from our own KDP and Amazon Ads accounts. We don't invent examples, and we don't use other people's numbers without naming the source.

Book titles, covers and keywords are hidden in screenshots. The numbers are never changed.

How we check facts

• Rules, royalty rates and limits are checked against Amazon KDP and Amazon Ads help pages.
• Software prices and features are checked on the vendor's site and in the product itself as of the article date.
• When something depends on the marketplace or format, we say which one.

How we update

Amazon changes its rules often. When a change affects money, we update the article and its update date.

Software recommendations

In articles about KDP software, AuthorLens comes first: we use it daily and recommend it. Details are on our disclosure page. When another tool fits a job better, we say so.

Found a mistake?

Email us at bookbusinesskdpamazon@gmail.com and we'll check and fix it.