This is a great version of the Imperial AT-AT walker, I was a bit worried about the size of it as My son is only 3, however he loves it and its actually lighter than you'd expect, he can move it around with the handle and pretend its walking using the Button for walking sounds on the top. It never took him long to work it all out as it's fairly simple.
Some of the stickers were a little tricky to get on, and definitely require an adult, also to out it together initially, though this takes 5 minutes and it's sturdy.
Some small issues with it, despite its size, there is not a lot of room inside, for example a Darth Vader figure with its extra height cannot stand in either front cockpit or the top level of the central opening. Also the speeder on the rear is a kind of pointless idea and would have been better served as a location for troops, to make back section larger, when it's in, no troops can fit in easily to rear section.
As a whole it is a good toy though, but I would not pay any more than £100 for this toy, and it is massive so be prepared to have space for this to sit when built up.