As an early Prime Day deal, Amazon is offering their Prime members up to 40% off their Kindle Unlimited services for a limited time.

With the Kindle Unlimited subscription, you can access hundreds of thousands of Kindle books and thousands of audiobooks with Whispersync for Voice. You can keep up to ten books at a time and there are no due dates. Read your Kindle Unlimited books on any Amazon device, or free Kindle reading app.