Note: there are quite a few XBOX 360 and PS3 titles (and a few Wii ones) on sale at ASDA.
This game was seen at Corby - not sure if it's available at that price at other stores - maybe someone else could check?
I'd been keeping an eye out for this one for a while now and this is the cheapest I've seen it in a store (best price I'd seen before was £15 used).
Game description (from ASDA website) for those that haven't heard of it before.....
Build an adventure of mechanical mayhem!
Banjo and Kazooie are facing their greatest adventure yet, battling long-time nemesis Gruntilda for rightful ownership of Spiral Mountain. Use your wits and imagination to invent wild and wonderful contraptions so Banjo and Kazooie can crush this wicked witch. Rule the road, sky and water in the land of Banjo-Kazooie: Nuts and Bolts!
Discover and explore 6 different worlds with over 100 challenges.
Share your blueprints, team up with friends and battle on Xbox Live.
If it steers, floats or flies, you can build it using over 100 unique parts and blueprints.