This is probably very store specific but was in tesco Lincoln today (wragby road) and they had darksiders for the ps3 for £20. Didnt take a photo or anything but it was definitely £20. Didnt check to see what price it was for the 360, cant even find the game on tesco website.
Proabably not the best first deal I could post as I dont have any proof but thought it might help some people
Also they had pro evo 2009 for the pc for £5