Cheapest that there is for a brand new copy. There is also some other good deals to brighten the spirits of those that missed out on the Currys deals which I will list below:
Sega Superstar Tennis (360) - £2.99
Kung Fu Rider (PS3) - £2.99
Iron Man 2 (PS3) - £3.99
Killzone 2 (PS3) - £4.99
Resistance 2 (PS3) - £4.99
Professor Layton and the Curious Village (DS) - £9.99
Potentially some others if you look hard enough!