The Dark Knight Trilogy (Batman Begins / The Dark Knight / The Dark Knight Rises) is being released on December 4, 2012. You can actually pre-order it for $29.96 right now (compared to $52.99). This item has Amazon‘s low price guarantee in that if the price drops further between the time you purchase and the release date, they will refund you the difference.
**Prices and availability subject to change. Make sure you confirm the price prior to purchase.