I bought these, but there exists kits made by the same person who made them. It takes time to build these kind of things, probably a day or two, then painting can take as long. It could take longer. It depends on your experience with making and also with handling power tools, glue. Non-power tools… Together they cost me 600 something USD. 700 something, I think, if you count the custom and shipping and such. (I live in Denmark). I am not sure I am allowed to post links to the seller, so I am holding out doing something that. But I can tell you that he goes by the name of Sledge Riprock online, his real name is Bob Bukowski, and her worked on the newest season, season 11, the revival of the series. He built the bots used in it, with the arm upgraded and stuff (new Tom has working arms, the springs also don’t bounce and so do Crow.)