According to a Wall Street Journal Report, the Department of Justice is threatening to sue Apple and five book publishers for artificially inflating the price of ebooks. The five book publishers include Simon & Schuster, Hachette Book Group, Pearson PLC's Penguin Group, Macmillan and HarperCollins Publishers, Inc. The investigation centers on Apple's agency model pricing for ebooks in the iBookstore. Instead of a wholesale model that Amazon was using, Apple pushed for an agency model which let publishers set book prices and Apple would take a 30 percent cut. Amazon, howev