Yes
Only if cheap
Only if something else (specify)
No
Not even interested
I had a crack at assembling this just using my son's extensive collection, but there were a few pieces that he did not have. The hips were an unusual racheting circle, there were some uncommon rod lengths and there were heaps of corner pegs, I think the Lego term for them is a SNOT. It's a really thick assembly too, lots of unseen interior pieces. After a while I just gave up. If I get bored I might start again, but first I would have to collect all the requisite pieces.