To me, the local prices seem based on Huffy prices. Basic Schwinns seem to go double of Huffy's and other prices are based off the Schwinns....
search for vintage Bianchi yielded
Bianchi Eros/ Shimano 105 $350
Racing Bianchi with Campy Super Record $999
There's a Schwinn Caliente for sale for $225, but that's abnormal. Usually, Huffys are about $50, Schwinns are $75-$125
Here's an SR PRO Racing bike for $550.
http://minneapolis.craigslist.org/bik/752323047.html That's more than I paid for my Mondonico, and it was not a "find" but more like fair value.