If everyone starts asking that, anyone wanting one has to pay that. And that essentially becomes the new "market" value. I hear this argument a lot, that "they aren't selling for that", but they actually do when that is all that is available.
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Yes.... the speculators are in the house now.... And they alone will drive prices up. It is a snowball effect. They buy to resell, so does the next guy... and the next guy... demand goes up when people see they can turn a profit. When they turn profits, demand goes up and so on... left in the cold is the guy that loves the car and can no longer afford one.