Who are the most "over-valued" players

[Balticfox]

Originally Posted by Peter_Spaeth

For most goods and services I would think supply and demand dictate price, not that the price itself influences demand, but with baseball cards, who knows.

Yes, that's what you'd expect for goods and services alright. It's textbook economics.

But there's an investor/speculator crowd which believes that "the trend is your friend" and accordingly extrapolates past price changes on into the future. So increases in price can actually spur demand which is how price bubbles are created. Price bubbles like any other do of course eventually burst.