Really, there are comparatively few good deals on CL up here, unless you're buying an old road frame and doing the conversion yourself. I was literally about to leave the coffee shop, go to the LBS, and buy a used Franken-bike for three hundred bucks, and then I saw the ad.
Dude was pretty cool, too, and didn't give me any crap for my fixed-gear ignorance - even going so far as to promise not to laugh when I inevitably fell and broke my face. Luckily, that hasn't actually happened...yet.
Serious question, though: I used to ride a mountain bike, and spent a lot of the time out of the saddle. Now that I'm having to sit down when riding, it's really kinda hurting my ass-bone. Any way to fix that?