Amazon has Lollipop Chainsaw for Xbox 360 at $20. The game normally sells for $40 so you get half off.
Lollipop Chainsaw is a Hack and Slash, single player Action game in which players battle zombies as never before – in the form of the spirited and sexy, chainsaw-wielding cheerleader heroine, Juliet Starling. The game contains an addictive mixture of mature zombie apocalypse gameplay, juxtaposed with the bubbly actions and attitude of the perky teen heroine. Additional features include, upgradable cheerleading abilities and chain saws that both serve in combat, over-the-top zombie rock lord bosses, a storyline full of hooks, and a rockin’ soundtrack.
Buy it now here