is this wheel unrepairable? Mavic Cosmic
 

http://grandrapids.craigslist.org/bik/2057962107.html

Seems like a good deal, but i don't think with carbon it'd be a good idea. I am also skeptical of any warranty options if i were to pick these up and be 2nd owner

Run away fast.

A wheel failure can be catastrophic. Makes you wonder what made the nipple pull through.

As a second owner, you probably have absolutely no warranty whatsoever. Avoid these like the plague.

The rear wheel is a toss, unless you can source a replacement rear rim, probably a waste of time/money. So that leaves front wheel and rear hub + spare spokes for $200. Old outdated wheelset with parts that may not be readily available should they go. Pass.

thanks guys, he is going to get a photo for me tomorrow, unless he is just mis-understood or something, i will probably pass... if it's too good to be true...

Those aren't carbon rims, they're alloy rims with a carbon non-structural fairing.

This is true.

I have a set of thos that I bought new in 1998. After several years a nipple broke in the rear wheel. The dealer sent it to MAVIC for repair but they said the wheel could not be repaired and replaced the wheel at cost, $400. The warranty was only good for 2 years. The wheels shown are 1st generation Carbones, like mine. Probably at least 10 years old.
If you want the front wheel it's probably worth $200 to use in time trials or triathlons. The aerodynamics are pretty good but these wheel are heavy, not so good for daily use.
I rarely use mine.