Just spotted this morning in my local Game store (East Kilbride) down from £17.99 to £12.99. Better price than all the online retailers. Just checked and its still £17.99 on the Game website so instore only at the moment.
Oops i appear to have missed the small print. It's actually "£12.99 when bought with anything else instore" - still a good deal i think if you can pick up sthg else you need at a reasonable price. Sorry about that.