Good source for valuation
 

A new website gives actual ebay and other sale prices and descriptions for cars that have actually sold. Check it out - Fuelist.com - There are very many data points for a wide variety of cars, and you can get fairly narrow in your search criteria - eg 69-73 911T yields lots of data points (50? I didn't count), and clicking on each shows the original advert.

No affiliation - this is a new venture by a really motivated Alfa guy

Good hunting!

George,
I checked it out. I was ready to sign up before I saw - BETA. I'm too paranoid and ignorant to be placing my cmptr. there, but it does look like a good database.

What an awesome website.