In emails sent to customers on Saturday (October 13), Amazon confirmed that refunds of between 30 cents and $1.32 would be offered for eBooks bought between April 2010 and May 2012.
The refunds cover books published by News Corp's HarperCollins, Lagardère's Hachette Book Group and CBS Corp's Simon & Schuster, after the three firms admitted to inflating eBook prices following an antitrust legal action.
Amazon told customers that the compensation would automatically be credited to their account once the settlements get final court approval, with the hearing scheduled for February 2013.
HarperCollins, Hachette Book Group and Simon & Schuster have agreed to pay $69 million into a fund to pay for the refunds.
Customers will get $1.32 for each title that was on the New York Times best-seller list during the claim period, and 30 cents for any other titles.
Instead of credit, customers can ask for their refund to be paid by cheque.
"We think these settlements are a big win for customers and look forward to lowering prices on more Kindle books in the future," the retailer said.
A spokeswoman for Barnes & Noble, which produces the NOOK line of eReader devices, confirmed to The Wall Street Journal that it will send out similar information to its customers shortly.
Agreed in September, the price-fixing settlements came about after the US Justice Department accused Apple and five publishers (also including Penguin and Macmillan) of illegally colluding to drive up eBook prices.
It was claimed that they did so in order to battle Amazon's dominance in the market, and stop the online retailer from offering books for the discount price of $9.99.
Whilst they did not admit any wrongdoing, HarperCollins, Simon & Schuster Inc and Hachette Book Group all opted to settle the case.
Amazon was not involved in the legal action.
Apple, Penguin and Macmillan have decided to fight the charges, meaning it is likely to be some time before customers see lower prices on eBooks.