Why are Superbirds worth so much?

Alright, a special thanks to Fishy for helping me with the following pics.

Pic #1 is from Page AZ. This is where those of us from the northwest met up with the SoCal guys and the Kiwi's

Pic #2 is from the same day in Monument Valley. The two B5 cars are from the Pacific NW, the Red with black butt stripe and the Neil Castle #6 clone car are from Palm Desert, CA and the Orange with the white butt stripe is the New Zealanders that shipped their car to LA.

Pic #3 is from the lineup at Talladega right before we took a parade lap around the track

ok sorry only the 2nd pic will load up

roadtrip 022---last try.JPG