The HoverBot kit contains the parts to construct a robotic hovercraft, all you need to add is a robot controller. The HoverBot kit costs $85.00 plus $11.00 shipping (the larger box increases the cost of shipping this kit). A CheapBot-14 and CheapBot-18 works well as the robot controller and if purchased with a HoverBot kit, will be shipped at no extra charge.
Instructions for making a HoverBot
Sample code (PICAXE) for testing a HoverBot