Some Amazon eBook customers received automatic credits to their accounts on Thursday as a result of an antitrust legal settlement from 2013.
The credits stem from a court approved legal settlement by popular publishers such as HarperCollins, Hachette, and Penguin for alleged eBook price fixing.
Some customers who made qualifying purchases between April 2010 and May 2012 were surprised to find credits of $2, $5, sometimes more than $8 automatically applied to their Amazon accounts.
Others were not so satisfied with what they had received as a result of the settlement.
All of the credits issued, which were wholly funded by the publishers themselves, are valid through July 31, 2016, according to Amazon's FAQ for eBook Settlements.
Amazon did not immediately respond to a request for comment.
Amazon customers looking to see what their Amazon credit balance is can check here.