A-bodies over priced?

Look at Mustangs and Corvettes. Everyone owns one and even though their are so many they bring in good money because they are popular. (Just watch Mecum... Every other car is a Corvette) But the onyl Mopars are the E-bodies with big motors.
They only made between 20,000 and 30,000 Corvettes each year in the 60s. That's not that many, but they have been making them for over 55 years. That adds up to a lot, and the survival rate may be higher than other throw-away cars like the Mustang. Mecum is a place for those cars. That's why you see so many there. By watching Barrett Jackson, you'd think they made more Hemi cars than Toyotas. Those first years, they made what, 500,000 Mustangs each year? How many of those survive today? Although you can say the same for Mopars, and the most popular ones were made for a very short time. With oil prices the way they are going, I wonder how many new Hemi Challengers they are going to sell.