You of course are going to need to purchase the console itself, which is currently selling for $199.99. The console comes with everything needed to connect it to your TV, a copy of Wii sports, and one Wii remote controller with a nunchuck controller. In addition to the console I would suggest purchasing an additional Wii remote controller, and another nunchuck (this will allow you to easily play with other players).

Don't forget to purchase the batteries needed to run your remote controllers, and if you anticipate playing quite often I would suggest purchasing a Wii remote controller charging station to keep your remotes charged. All of these accessories are under the accessories tab on the Wii console page, and if you want to look at the console you could go here: http://tinyurl.com/yos2vb. I hope this helps!