Seems a good price to me
The corner stone of PlayStation Move, PlayStation Move motion controller combines advanced motion sensors, a dynamic color changing sphere, vibration feedback, and an easy to use button interface. Equipped with three-axis gyroscope, three-axis accelerometer and terrestrial magnetic field sensor, PlayStation Move motion controller tracks the precise movements and the angle of the controller. The PS3 system also detects the absolute position of the controller in 3D space by using PlayStation Eye camera. Highly sensitive movement tracking can be accurately traced back to the game, allowing intuitive gameplay as if the player is within the game.