It's £13.55 on the normal Amazon website but follow more purchase options, and it is £5.79 through Amazon Jersey. It's free delivery and if you have a Nectar card, you can collect Nectar points too!
"Crackdown" pushes the action-driving hybrid genre into the next generation with the introduction of the first-ever truly 3-dimensional persistent playground, highly innovative co-op gameplay and an extensive prop interaction system all while taking place in a massive and highly-stylized urban center. Players are called to unleash explosive judicial oppression on the most powerful, organized crime syndicates in existence. Restitution is the only goal. Players must crackdown on crime, decipher the organization of the gangs, and eliminate the kingpins. All strategies and tactics are acceptable provided players clean up the streets. Players roam a virtual city built to encourage and allow the full width, depth and height of the space to be explored and exploited. Free form gameplay, over-the-top action and for the first time ever in this genre, players can join up with a friend to take on crime in online cooperative play. Developed for Microsoft Game Studios by Real Time Worlds and led by David Jones', whose key staff were behind some of the most innovative and best-selling video games including the global blockbuster "Grand Theft Auto" and the legendary hit, "Lemmings."