I'm sharing this link from back in the days when people still read BSNYC's blog because I loved the idea of the PistaDex:
Bike Snob NYC: BSNYC Fixed-Gear Apocalypse Watch: The PistaDex
The current PistaDex in Portland looks like its about $643, but that's being bolstered by two Super Pistas. I'm not certain of how to read that, but I think the fixed gear apocalypse has come and gone.
Another way to look at it, if I search "fixed gear" on PDX CL I get 25 results. As a comparison to establish scale, if I search "Huffy" I get 33 results.
I've got an old beat-up Schwinn Voyageur in my garage with a flip/flop rear wheel. There was a time when that would have been money. Now I probably couldn't give it away.