If you are looking to buy a book from Amazon in the near future, you better look twice. Some books may not be available or there may not be a pre-order option. Amazon and publisher Hachette are in a major dispute over pricing and Amazon's trying to make a point. To read more about this dispute and other dispute's between Amazon and publisher's, click here: http://www.nytimes.com/2014/06/02/business/media/amazon-absorbing-price-fight-punches.html
Don't worry! You can still get all your favorite books published by Hachette(James Patterson, Donna Tartt, J.K. Rowling) at the library.