Originally Posted by
Camron
Info I have found it retailed for 1500.
I found a couple of notes saying "Sonoma Bicycle Company closed back in late 2009." Apparently a California company, or store. That would make your bike likely over a dozen years old... that is if it is the same store/company.
I think I found the same auction site you found. Unfortunately the actual sale price was obscured. Without other confirmation, I take former price estimates with a gain of salt.
Nonetheless, it is hard to go wrong with any bike with "brifters" for $150, especially if less than 10 years old.
One note. The aluminum bikes from about 2000 to 2010 got a reputation as bone shakers. Older aluminum bikes had too much flex, and newer ones apparently were a bit better, but those in the middle were stiff. I'm not sure I've actually ridden one myself. Some can be adjusted by getting the tire pressure just right.