Bought this for my son (age of 3) and he loves it. It was a lot of fun assembling and disassembling so many pieces with the electric toy drill. I am happy with the purchase because it is quite educational as well. You do not need to follow the instructions exactly and my son certainly used his wild imagination to add a couple of parts to different places to create his own robot. His big sister (6 years old) also enjoyed this toy.
The customer service is good as well. Emails were responded quite promptly.