http://ames.craigslist.org/bik/3231479645.html
after a little search, 600 used to be ultegra a while back. But this much have been in the late 90s early 00s, and I wouldn't know how the ultegra from that time period would compare to the 105 or even tiagra of today. In addition, I don't like carbon frames. And it looks pretty banged up. I'm not going to buy it, but I'm just curious how 600 compares to modern shimano components.