Might not be everyone's cup of tea as its the basic game with a cuddly toy and an extra game character, but it seems to be the cheapest I can see. I imagine you can probably get the basic game for this price.
I was after Assassin's Creed and this so I went to Sainsbury's Straiton (near Edinburgh)and used a combination of £15 off vouchers to get both games for £48.
The only problem now is:
1 toy + 2 kids = argument