E-Readers are designed to store all of your books in a virtual library with limited functionality. The devices are multipurpose and can be used for a ton of things, like surfing the web or doom-scrolling on Twitter.

Amazon, one of the pioneers of the e-reader, has dominated the space for years. Its Kindle range consists of several unique models with their own pros and cons.

Amazon also offers 20 percent off all of its Kindles when you trade in select devices. There are still other ways to save money when none of the models are available at a discount.

Amazon Kindle e-readers come in different storage configuration, but there is also an additional option that allows you to buy the e-reader with or without ads. Ad-Supported Kindles display personalized ads on the lock screen when it is in sleep mode or at the bottom of the home screen when the device is connected to Wi-Fi.

The base Kindle is Amazon’s most affordable e-reader. It usually retails for $ 89.99.

The 10th-gen Kindle normally starts at $ 89.99 with ads, which is its current price at Amazon, Target, and Best Buy. If you want the model without ads, it’s available right now on Amazon for $ 109.99, the standard retail price the latter retailer is also selling the ad-supported e-reader in either black or white with a power adapter and one of four fabric covers for $ 124.97, a $ 15 discount.

All three retailers are offering $ 20 off a pair of Kindles. If you buy either Kindle model at Amazon, you’ll also receive three months of Kindle Unlimited at no additional cost.