Next best price I can find is £17.99 at play.com
Crayola Color Explosion Glow Dome lets kids draw on the dome with built-in lights to see inside and outside of the dome and creates a flashing effect. A built-in motor rotates the dome at different speeds. Create the illusion of animation with flashing lights. Product dimensions 10.5 x 10.9 x 9, For ages 6-15. Requires 3 AA batteries.