Noticed this instore today and thought it was cheaper than I'd seen online (indeed it is at game at least). Looked about and haven't seen it cheaper - Obviously feel free to correct me on this.
Edit: Has also been seen/bought on the DS for the same price by galaia2004
The rivalry of Team Mario and Team Sonic explodes in an all new winter sports competition Mario & Sonic at the Olympic Winter Games. Developed exclusively for the Wii video game system and the Nintendo DS system, this sports party game is a follow-up to the smash hit Mario & Sonic at the Olympic Games.
This game will allow you to take to the snow and ice of Vancouver and Whistler, Host Cities of the 2010 Winter Games, and test your Olympic Spirit in competitive events through your favorite Mario and Sonic characters. With an assortment of new challenging Dream Events and surprises from the world of Mario and Sonic, the stage is set for a winter Olympic experience like no other.
* A multitude of events: Prepare to compete in the Olympic Games with your friends and family! Compete in real Olympic events along with over-the-top Dream Events offer surprising objects and new character-specific moves. Sharpen your team-playing skills with new simultaneous cooperative play on the Wii and get your fill of head-to-head rivalry in the popular competitive events.
* Choose from an assortment of Mario and Sonic characters: Players can choose from their favorite Mario and Sonic characters, including Luigi, Tails, Yoshi, and Knuckles, each with unique movements and stats. A few new faces, including Donkey Kong and Metal Sonic, have also been added to the teams!
* Intuitive controls and full use of hardware: Players are challenged to perform a variety of movements using intuitive controls on the Wii Remote/Nunchuk and Wii Balance Board as they simulate real-life movements, and skate, ski and snowboard their way to glory. Single, multi-player and co-op offer fun for players of all ages!
* Wii modes of play: Compete in single events in the individual mode and team mode, or challenge your friends to an entire Olympic competition! A new Festival Mode also allow players to experience the full campaign (single and multi-player). This includes new boss competitions against unique Mario and Sonic characters.