did you use words like
"track fixie fixtie velodrome pista single speed" in the description?
because seriously, i've also seen some janky assed junk sell for those prices too.
i think craigslist is all about tricking the most gullible seller you can find that they're smart for using craigslist and are getting genuinely pricey stuff for cheap.
honesty will only get you what your stuff is worth, good or bad as that may be. deception, even slight deception, is always more profitable when reputation and repeat customers isn't a concern.