Prior to 2010, e-book resellers were able to sell e-books at whatever price they wanted, leading to Amazon offering a slew of content for $0.99, which many people speculated was actually costing them money, but establishing them as a leading seller. In 2010, coinciding with the release time of the iPad, the publishers in question all switch to a new pricing system, referred to as the “agency model”, which allowed the publisher to solely control the content price and gave the reseller a fixed percentage of the sale.
This mass switch in pricing is what is believed to have triggered suspicion. In March 2011, the European Commission performed unannounced inspections at several companies and reportedly seized contracts and executives’ smartphones and computers.
In today’s press release, the European Commission stated that it will “investigate whether these publishing groups and Apple have engaged in illegal agreements or practices” because it “has concerns, that these practices may breach EU antitrust rules that prohibit cartels and restrictive business practices.”
source: Europa via LA Times