I ended up finding a Cybot in complete form at a local charity shop couple of days ago. The set included the robot, the controller, the voice operation headset, and two boxes with additional parts unused and still in their plastic wrappings, and the first 33 issues of the partworks and the first five CD-ROMs with the programming software, respectively.
I have been checking them, and all appear to be in good working condition. And I got them all for about twenty dollars Australian. The only real problem with it was the castor wheel being broken, but I was able to fix that with some super glue quite easily, while lubricating the shaft with olive oil to help it move better.
I wonder what anyone else thinks?