Right now on Amazon you can grab The Tale of Despereaux  on DVD for $4.99.
It ships FREE with Super Saver Shipping or Amazon Prime.
PLUS Watch the Amazon Instant Video rental on your PC, Mac, compatible TV or compatible device at no charge when you buy this DVD from Amazon.com. Your rental will expire 24 hours after you begin watching or 30 days after your disc purchase, whichever occurs first. The Amazon Instant Video version will be available in Your Video Library and is provided as a gift with disc purchase.
Once upon a time in the far away kingdom of Dor lived a brave and virtuous mouse with comically oversized ears who dreamt of becoming a knight. Banished from his home for having such lofty ambitions, Despereaux sets off on an amazing adventure with his good-hearted rat friend Roscuro, who leads him, at long last, on a very noble quest to rescue an endangered princess and save an entire kingdom from darkness. Based on the heartwarming children’s bestselling book and featuring the voice talents of an all-star cast, The Tale of Despereaux is a magical, modern fairytale that’s destined to win the hearts of young and old alike.
Remember to double check the price before you buy- Amazon prices change quickly!