Play.com is selling "Colin McRae: DIRT" for the PC for £9.99 inc Del.
You can also get cashback from the usual places (e.g. 4% Quidco)
Next best price seems to be £14.99 from Game.
Colin McRae: DiRT is set to be the most diverse and exhilarating off-road racing experience ever with sensational gravel, mud and dirt events the world over. Events will include the series' intense point-to-point races and then take players further off-road than ever before.
Race in challenging heavyweight 850bhp cars, drifting on the loose gravel and high-speed blind corners of Hill Climb events along perilous cliff edges. All 12.4 miles of the world famous Pikes Peak International is included, with over 150 precarious turns to negotiate through the Rocky Mountains of Colorado.
How about engaging in multiple car races with Dakar-style trucks and super-powered 4x4s on the toughest desert terrain in Rally Raid competitions? Then there are Rally Cross events, switching between dirt and road racing, where the competition is always tight, fast and collisions with your opponents are inevitable.
With more off-road racing styles to be revealed, Colin McRae: DiRT will also offer a dedicated mode for European, International and Global rally championships featuring official 2WD, 4WD, Classic and RWD rally cars.