Amazon launched "Kindle Unlimited" which gives Kindle users unlimited access to e-books and audiobooks for $9.99 a month. The company said Friday that the Kindle unlimited service will give users the ability to read as much as they want from more than 600,000 Kindle titles. Some notable titles include the Lord of the Rings trilogy and the Harry Potter series. The roll out of Amazon's latest reading and listening subscription is bad news for companies like Scribd and Oyster - both offer a similar subscription model but with a smaller library. Scribd offers unlimited access to 400,000 books for $8.99 a month and Oyster offers 500,000 books for $9.95 a month. The 'Netflix for books' monthly service was released despite tension between Amazon and its partner publishers due to its dispute with Hachette over e-book prices. The royalty's terms that Amazon worked out with publishers was not disclosed.