Campy's collectibility can be counter-intuitive - the stuff that was popular and great, like NR, isn't terribly expensive because it was around forever and lots used it. C-record is valuable because it wasn't popular or around for long - there's less supply. All vintage bikes are, to some extent, about style over substance, and c-record had a lot of style.
Example - the campy aero bottles/cage. God awful, but they sure are pretty and $$$.