Remember the cost of this item...not that great, when you consider it contains all the parts [1] to make six fun little models. It includes push-out stiff card chassis items, wooden axle rods, electric motor, wire, battery holder, stickers etc. Each of the six 'robots' is quite different; e.g. one will trundle round the room, automatically deflecting itself when it hits something. Nothing earth shattering, but my six year old loved it! At 19.99 I'm not sure I'd buy it; for less than that it is not bad value; that's why I gave it 4 and not 5. I think it is unfair to expect more from an item such as this....it is certainly a way of filling a rainy afternoon or two!

[1] You need glue and paper clips.