I believe it is generational
Think about the prices for say an e type or even a willys jeep. I got stupid money for a jeep 20 years ago now i can buy the same for half the price. It is good old supply and demand and demand will slow as people get older. Think about a Brock commodore they dropped in the 90s now look at them
just my 2 cents
see even 2 cents don't exist anymore no demand