According to TowerHobbies, the term "kit" in my standards holds true; it's a chassis only (roller). It comes with the chassis, all the parts needed to assemble the chassis, tires and rims and an unpainted body.
You'll need to purchase an ESC and motor, Transmitter and Receiver, Steering Servo, Battery and Battery Charger. When all is said and done, depending on how much you're willing to spend, it'll probably cost you $250 total. You could certainly do it for less, however, with a good amount of shopping and leg work.
TowerHobbies