If you've purchased an Amazon Kindle e-book within the past couple of years, you might be eligible to receive a credit as part of an antitrust settlement reached in April. Yes, this is the same settlement that was reached between the Department of Justice and book publishers Hachette Book Group, HarperCollins Publishers and Simon & Schuster.

Once the settlement is approved by the court, publishers will provide Amazon with money that will then be refunded to buyers of eligible e-books.

The money will be automatically added to the user's Amazon account in the form of a credit that can be used to purchase other e-books or printed books. Customers can also elect to receive money owed to them via check.

According to Amazon's FAQ on the subject, customers can expect to receive between $0.30 and $1.32 per Kindle book purchased. It's not a ton of money but if you happen to be an avid reader that's purchased a large amount of reading material through Amazon, you might be able to score a few free books out of the deal.

To receive a refund, one must have purchased a book between April 1, 2010 and May 21, 2012. Exclusions include books that were returned or if money was otherwise refunded. Additionally, residents of Minnesota are excluded from the settlement.

The FAQ point out that only books purchased from publishers Hachette, HarperCollins and Simon & Schuster, Penguin or Macmillan are eligible. It's worth mentioning that Amazon wasn't part of the lawsuit in question. Be sure to hit up the FAQ for more information if you think you might be eligible for a refund.