Hook was a real hard one to find. Most of the ones I came across were snapped or with missing arms. Finally I found one that wasn't too bad and repaired it - The previous Hook I owned had a prosthetic KO arm that stood out badly as it was bright green.
It took me over 2 years to Complete Devastator - I had a KO set and slowly begun to replace limbs and parts of it with real ones bit by bit until I finally managed a legit complete set with legit weapons and accessories. You can see my 'in progress' Frankenstainy Devastator in my earlier collection pics.
Yeah, I haven't seen many legit Constructicons recently at the fair but I haven't really been looking.