Well, going off the top of my head... (and not in any particular order)
Price when new (need to get it converted + "inflated" into today's money)
027R's Current asking price
The asking price of the blue car T&C have
007's when it went to auction (both prices. 1st time didn't sell)
014's "asking" price, too high tho, same with 028
022 when it went to Wyclef (if he paid 1.8 like he said, he's nuts)
053's asking price from when it was on mobile.de recently
069 when it was in the US
011 when it was at Christies
073 when it was at Christies
038's asking price (When Dan was selling it)
What i'm more worried about is exactly when these cars sold
Also, if anyone wants to contact me privatley, thats fine. I will not reveal who told me the info or the chassis # if you would not like me to.