Thumb Score: +28 Amazon.com has The Dark Knight Trilogy: Special Edition w/ Special Features (6-Disc Blu-ray) on sale for $15.99. Shipping is free. Thanks Discombobulated Walmart.com also has The Dark Knight Trilogy: Special Edition w/ Special Features (6-Disc Blu-ray) on sale for $15.99. Select free in-store pickup to save on shipping, otherwise shipping is free on orders $35 or more.