By reading this site or using its calculators you agree to these terms. They are short, and we have kept them in plain English.
book-business-kdp-amazon.com is run by Darya Neskoromna, a registered sole proprietor (FOP) in Ukraine, tax ID 3221602148. "We" and "us" on these pages mean her and the team that writes the articles.
The articles explain how Amazon KDP, Amazon Ads and KDP tools work, using numbers and screenshots from our own accounts. The calculators give estimates from the numbers you enter.
They are general information, not financial, tax, legal or business advice for your situation. Amazon's rules, royalty rates and ad costs change; always check the current terms in KDP Help and Amazon Ads before you decide.
Our numbers are our own results. They are not typical and not a promise: what your books earn depends on the niche, the book, the price, the competition, your ads and Amazon itself. You are responsible for decisions you make based on what you read here.
We use AuthorLens daily and have a business relationship with it. Articles that mention it say so. We review other tools, including competitors, on the same terms: what each one does, what it costs and who it suits.
This site is not affiliated with, endorsed by or sponsored by Amazon. Amazon, Kindle, Kindle Direct Publishing, KDP and Amazon Ads are trademarks of Amazon.com, Inc. or its affiliates. Other product names belong to their owners and are used only to identify those products.
The texts, screenshots, charts and calculators on this site are ours. You may quote a short passage with a link to the source. Copying whole articles or republishing screenshots without permission is not allowed.
We link to Amazon, AuthorLens and the tools we review. We do not control those sites and are not responsible for their content, prices or privacy practices.
The site is provided as is. We work to keep it accurate and up to date but cannot guarantee that every figure is current or error-free. To the extent the law allows, we are not liable for losses arising from use of the site.
We may update these terms; the current version is always at this address. These terms are governed by the laws of Ukraine, without limiting any rights you have under the consumer laws of your country.
Last updated: September 26, 2026