Where can I buy the best deal on a Wii console and the game Mario Cart with steering wheel.?

You can find them at http://www.bigmoneyarcade.com

Check out Gamestop for the console. They have new systems for $199.99 or refurbished systems for $169.99. MarioKart is $49.99 with extra wheels being sold for $14.99. Also, if you have a gametop card you can save 10% on the purchase of used items.

You will get the best deal on Wii at walmart!  It sells for $199.00!
specifics are:
Featuring a remarkable wireless controller experience, the Nintendo Wii console invites players into game worlds and activities like never before. Whether young or old, expert gamers or beginners, Nintendo Wii players will express themselves with intuitive motion control using the Wii Remote. Nintendo Wii Sports (packaged with the Nintendo Wii console) introduces players to great virtual gaming experiences. Nintendo Wii also taps into and unrivaled legacy of great games with the Virtual Nintendo Wii Console. Connecting via wireless broadband to the Nintendo Wi-Fi Connection, Nintendo Wii owners can spend Virtual Console points to download selected classic games from NES, Super NES and N64 video game consoles. And through WiiConnect24, owners can access even more content. Four-player compatibility, plus the ability to compete with other Nintendo Wii players means that Nintendo Wii offers a true social experience. The sleek Nintendo Wii console includes Wii Sports, a sensor bar, an AV cable, a Wii stand, a Wii Remote, and a Nunchuk controller for even more exciting game-control possibilities

they also have the mario kart with 2 player steering wheels in a bundle for $59.00 and free shipping!  or the game and single wheel for $49.96

Hi, and welcome to IMshopping! There are several places where you can purchase the Wii console with Mario Kart for a reasonable price. You can check out GameStop, Walmart, Target, EBay, Amazon, and a whole lot of other fine online and local retailers. Here are some places that you should check out for this really great bundle. I hope this helps you in your search and thanks for choosing Imshopping!