Kindle Unlimited: First Month Free, Then $9.99/month

For $9.99 a month, Kindle Unlimited lets you read or listen to a limitless number of books. It gives you access to more than 1 million books and thousands of audiobooks with Audible narration. In between books, you can also read a selection of magazines with Kindle Unlimited. It's a great service if you take your Kindle with you wherever you go, but you can also use the Kindle app on an iPad and other mobile devices. The drawback? You'll need to wait to read the latest releases, since they they are seldom on the virtual shelves of the Kindle Store.