The cheapest "Gotham Knight" DVD I can find is £6.98, so you get this and Batman Begins for £2 less
And the cheapest I can find this boxset outside of HMV is £10.43
Genius of mystery and intrigue Christopher Nolan (MEMENTO, FOLLOWING, INSOMNIA) helms this prequel to the Batman films based on the DC Comics series, explaining how Bruce Wayne (Christian Bale) the billionaire prince of Gotham whose parents were killed in an alleyway mugging transformed into the crime-fighting superhero. With flashbacks to his privileged childhood, young Master Wayne, as he is called by the butler Alfred (Michael Caine), develops a terrible fear of bats when he falls through the backyard garden into a hidden cave. As a young adult, Wayne lives among the League of Shadows, a martial arts group in the mountains of Asia. His leaders Ra's al Ghul (Ken Watanabe) and Henri Ducard (Liam Neeson) teach him strength, endurance, and unfortunately evil, against which he naturally rebels. Returning to Gotham and reinstating himself as a dapper socialite and the rightful heir to his parents' enterprise, Wayne quickly devises his secret identity, commanding help from the gadgetry expert Lucius Fox (Morgan Freeman). With one eye on his childhood playmate Rachel (Katie Holmes) now a beautiful woman and dedicated lawyer and the other on his mission to save Gotham from criminal corruption, Batman makes his fledgling debut. But when the blue-blooded mastermind Dr. Crane (Cillian Murphy) who steals every scene with chilling menace taints the water system with a hallucinatory substance, Batman realises he has met his first true opponent. An attitude of grave seriousness elevates BATMAN BEGINS above more cartoony Batman movies, as Nolan crafts a dark drama that thrives on sci-fi intrigue. Bale strides into the role with grace, adding refinement that is seldom seen in action-oriented films. And while the action scenes explode with high-tech glitz and fast-moving thrills, they are evenly placed among sequences of plot and character development, making for a complex and satisfying viewing experience.
Some of Hollywood's hottest writers lend their talents to this richly animated Batman anthology, featuring entries by David Goyer (BATMAN BEGINS), Josh Olson (A HISTORY OF VIOLENCE), and Alan Burnett (BATMAN: THE ANIMATED SERIES). With six stories in all, GOTHAM KNIGHT offers thrilling interpretations of the Caped Crusader, rendered in a style that recalls the dark and lurid lines of Japanese anime. Together, these interconnecting tales trace Batman from his early days battling evildoers in crime-plagued Gotham, to his later years as the metropolis's trusted defender. Along the way, the Dark Knight has shadowy showdowns with some of his most fearsome enemies, including Scarecrow, Killer Croc, and Dead Shot. Chock-full of explosive action sequences and bat gadgets, this continuation of the Batman saga is sure to bowl over both comic book nerds and fans of the feature films.