The title mentions "special offers", which is a kindle program that displays ads on the lock screen. In order to remove it you have to pay approximately 20 dollars.
It's an amazon deceptive offer, that is generally sold by default together with the kindle without clearly explaining what it is. To buy a kindle without "special offers", you need to actively opt out and this will increase the price by 20 dollars. But again, in the product description they don't tell you what "special offers" means, and you might think that the offer refers to the kindle …plus