Why are Superbirds worth so much?

Well... it is Winter here though. The car won't be out for a couple months I'm sure. Maybe he'll leave his garage door open and I can sneak in a picture or something? :)

Oh, the guy also has a '78 Cordoba with collector plates. So he has a Superbird, and a '78 Cordoba with hub caps! Don't ask me???????:dontknow: