I originally saw this in a certain department store and decided to get it from Amazon cos it was a little bit cheaper...arrived in good time, so can't fault the Amazon side of things.
Main issue - these are not durable bits of kit....my sons loved painting them and decorating them and thats good, but when it comes to playing with them - you have to be very gentle with them...more so than your average 7 and 9 year old boys are likely to be...
That being said, if they do break, its not too much faff to take them to pieces and re-jig the clock work inside to make it go again - but my point is that shouldn't be necessary. So all in all - good idea, could be more durable for the price....