Why are Superbirds worth so much?

I personally think that the Superbird and Daytona were one of the most beautiful looking muscle cars ever produced.I was and still am very fond of all of the old Mopar cars, these vehicles were the most stylish and beautiful vehicles ever produced. Man I remember when I was about 7 -8 years old driving by Lynnway CP in Lynn, Mass. with my 6 brothers and 1 sister in the back of my Mom's 65 Chev Wagon looking out at the beautiful cars with the cartoon decals on them all lined up in front on the lot looking pretty and saying WOW!!!!! while we gazed in wide eye wonderment at these awesome looking cars with the shiny awesome wild colors. Too bad I was too young to afford to buy a car back then. If I was born sooner, I would have cut off my left arm to own one of these cars. Man, they were and still are awesome!!!!!!!!