There are at least three used ones for sale here:
Buy & Sell Photo-Gear - FM Forums each about $1400 or so.
There is an interesting review (free) here:
Fujifilm X100 Test Report
BTW I've been shooting with a Panasonic Micro Four Thirds G2 with an Olympus 17 2.5 which is a similar concept. I find the tilt swivel screen and interchangeable lenses (I have the 7-14 and the 14-140) more useful than a fixed focus rangefinder )albeit with a very cool viewfinder and a better sensor.