(CNN) - Walmart, Books A Million and Barnes and Noble have found a way to cash in on the feud between Amazon and the book publisher Hachette.
Amazon and Hachette, the publisher of popular authors, including JK Rowling, are fighting over digital book prices.
Amazon has reportedly blocked pre-orders for some upcoming releases, including Rowling's The Silkworm.
So Walmart jumped into action. The world's largest retailer began offering nearly 400 Hachette titles for 40-percent off with delivery dates as soon as this week.
The websites of Barnes and Noble and Books A Million are also offering discounts for Hachette books.
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