Company of Heroes 2 £5?

While doing a bit of late evening shopping at MerryHill i popped into GAME and saw they had a few little deals on, decided to get Company of Heroes 2 [unfortunatley they had lots of empty red star versions but no discs, so ended up buying the standard one for £5. Well it seems like a good game to be fair, but wondered where / what is the cheapest place to get the collectors upgrade / red star version, Steam seems to be way over priced at the minute.

Cheers again,