Amazon recently launched Kindle Unlimited, a new e-book subscription service that gives you access to over 600,000 e-books and thousands of audiobooks for $9.99 per month. Amazon’s not the first company to launch a “Netflix for e-books” program, though – Oyster and Scribd have both already launched similar services. While Amazon’s 600,000 titles represent a bigger library than Oyster or Scribd, none of the “Big Five” publishers have signed an agreement with Amazon. That means there are plenty of books for you to read, but not necessarily the books you WANT to read. Most of Kindle Unlimited’s library overlaps with the Kindle Owners Lending Library, which lets you read one book a month for free with an Amazon Prime subscription. Considering Kindle Unlimited costs $20 more per year than Prime – and doesn’t include any other perks like free two-day shipping or music or video streaming – it’s an idea that’s better in theory than in reality. If you want to see what Kindle Unlimited is all about, you can sign up for a free 30-day trial today.