Wow, the swapmeet looks like it'd be interesting to attend, even if I do end up finding a bike before then! Thanks, Parizade!
Also, I briefly browsed that bike co-op's page, The Hub. It seems like a very intriguing idea -- to salvage old bikes, repair them, and then sell them much cheaper -- but at a glance from their site, it seems like all their bikes are well over a few hundred dollars. Even of their 'closeout' bikes, the cheapest was $110. While I'm sure they're very nice bikes, I'm not really one who considers himself a hardcore biker. I just need something ride-able from my apartment to the library and back again. Maybe down a state park trail once or twice a year. That sort of thing. That being that case, I'm thinking the >$100 bikes are well out of my expected price range. Though, perhaps their site is not reflective of the bikes sold at "dirty low prices."
Thanks again for the tips guys! For now, I'm keeping a very close eye on Craigslist and actually found a couple last night I'm hoping to arrange a closer inspection of tonight.