Here are some completed auctions for C-Record components:
http://completed.shop.ebay.com/i.htm....c0.m14&_pgn=3
Marty does have a point. If you enjoy collecting, you're likely not going to come across these components again without buying them back at a premium. They are the holy grail of that period for many. If you have no real use or interest in them, sell the whole lot to Marty for $50.
(I'll give you $75 though!)