Three of the publishers accused of conspiring, along with Apple, to fix the price of best-selling e-books, have had a settlement with the US Department of Justice approved.
Under the settlement, the publishers HarperCollins, Simon & Schuster and Hachette Book Group, have agreed to let retailers charge what they choose for e-books for at least two years.
District judge Denise Cote said that even though she aware of the impact her decision would have on the e-book market, she could not let companies engage in price-fixing.
“Even if Amazon was engaged in predatory pricing, this is no excuse for unlawful price-fixing,” she wrote in her judgement on the settlement.
The DoJ had accused those publishers, as well as Apple and two other publishers, of illegally colluding e-book prices, in a concerted effort to challenge the dominance of Amazon.
According to news agency Reuters, Apple, and two other publishers intend to fight the charges. The case is set for June 2013.
Many in the publishing world believe Amazon already has too much clout in its ability to set prices in the e-book market.
Apple had not responded to a request for comment at the time of publication.
Meanwhile, Amazon has shown off its latest breed of tablets, as it looks to see of the Google's challenge in the budget end of the market.
US space agency believes the crater could have preserved ancient organic molecules from the water that flowed there billions of years ago
Valve quietly closes down hardware initiatives launched following Windows 8
Scientists create a virtual reality simulation of a black hole sitting at the centre of the Milky Way
Simulations like this can help people understand complicated systems in the universe in a better way
The most luminous galaxy ever discovered is cannibalising at least three of its smaller neighbours, study finds
The galaxy radiates at 350 trillion times the luminosity of the Sun