When you buy a Kindle book from Amazon, you’re actually purchasing a license to view that book. Amazon doesn’t technically own the book—you do. This means that you can do what you want with your Kindle books, including selling them, giving them away, or even deleting them from your device.
However, Amazon reserves the right to take back Kindle books under certain circumstances. For example, if you return a Kindle book within seven days of purchase, Amazon will automatically refund your purchase and remove the book from your device.
Similarly, if Amazon discovers that a Kindle book is illegal or infringing on someone’s copyright, they may remove the book from your device without refunding your purchase.
So, while you technically own your Kindle books, Amazon does have the right to take them back in certain situations.