C-64c, How common?

I'm starting to wonder about how common the C-64c is. I have yet to see one, I picked up the manuals when a favorite bookstore had a set a few months back. Then last weekend I was at the bookstore and they had like 3 or 4 sets of manual. But like I said I've never seen an actual computer! Functionally are they any different from a standard 64? Zane | Zane H. Healy | UNIX Systems Adminstrator | | healyzh(a)ix.netcom.com (primary) | Linux Enthusiast | | healyzh(a)holonet.net (alternate) | Classic Computer Collector | +----------------------------------+----------------------------+ | For Empire of the Petal Throne and Traveller Role Playing, | | see http://www.dragonfire.net/~healyzh/ | | For the collecting of Classic Computers with info on them. | | see http://www.dragonfire.net/~healyzh/museum.html |