I like wool; I'm not picky otherwise. Tried to reprise iab's (successful) group buy last spring, but as others point out, it's complicated with all the personal preferences, out-of-stock items, etc. I ended up canceling the thing and returning paid-folk's money, because we couldn't get enough people who would buy if we couldn't make the volume discount minimum (myself included). It's a case of TMI, but you can read all about it here:
http://www.bikeforums.net/showthread...again-in-2010?

Be forewarned: it's a lot of work. Maybe I approached it in the wrong way.