Swift frameset in NYC for $250.
http://newyork.craigslist.org/brk/bik/723782477.html

According to the author, it's aluminum, but it's painted black so must have been a custom paint job. This may well have been the same one that was offered for several weeks running at $800, and now parted out.

Could provide a great basis for the bike of your dreams; start with the frame and make it into whatever you want.