Lightly used BH Cristal, ~6 years old with full carbon frame and Shimano 105 (5600) components, scored for $650 + $70 shipping.
The thing fits perfectly, and I've put over 10,000 miles on it now. At some point, I upgraded the groupset and wheels.
An even better deal was a Centurion Lemans frame (with fork, BB, and crankset) just sitting by a dumpster in an alley one day. That made a nice bike.