After I crashed my original arducopter frame I was looking for a new frame. I really wanted a foldable one so I can take it more easy with me on holidays. For the hell of it I bought the foldable x525 frame from goodluckbuy wich is $42 incl. shipping. I expected it to be rubish and of bad quality. But i am astonished as the frame is of great quality. I have been really abusing the frame now for a couple of days and it is really strong and solid. Folds great and the quality is actualy verry good. This frame really is a no brainer and gets my Steal of the week rating. So if you are looking for a cheap but verry strong folding frame then this is the one. BTW. it is about the same weight as the original arducopter 1.1 frame.