Excellent price for a game that has good reviews and is fairly recent. Next best I can see is £17.73 @ the Hut
Holy Batman! All the villains from Arkham Asylum have escaped and it's up to Batman and Robin to stop them. Play as Batman and his sidekick Robin as you build, drive, swing and fight your way through Gotham City. Then, jump into the story from the other side and play as Batman's foes. There is no rest for the good (or evil).
Play through the game in Story Mode from both the hero and villain sides Replay any level in Freeplay Mode with any characters you've unlocked. Access previously hidden areas to find additional rewards and bonus content Collect LEGO studs and special LEGO bricks throughout the game to unlock tons of extra content including special power-ups and bonus levels