my son(age 9) is in love with lego and has been for two years now, he bought this set with money he made selling old toys at a yard sale. the set was very easy to assemble when compared to other sets of this size that we have assembled in the past. it also is surprisingly sturdy while he plays with it, other sets fall apart under the stress of his battles and play. it is also easy to move as the entire set is assembled on a one-piece platform. and walmart site-to-store had the set available before it was available in stores!