Please take into consideration the inflated demand also. Dealers (especially large retail) will artificially inflate the demand numbers when it suits the needs. Hype comes in many forms and it is easy to fall prey to this. We all hear the stories of how rare the 1909-S VDB Lincoln is. Well folks, attend any large coin show and then come back and tell me how rare this coin is. There are an average of 20 to 35 at all major shows.
Catman makes a good point, but this only apply's to the medium to small dealers. When the big boys choose to correct a market price, they use the system to fool the collectors. How many articles have been written lately about the dealers cornering the small sets with mintages of 25,000? This is truely a load of garbage. The U.S. Mint could care less about catering to the dealers. They make their money on sets sold, not who is buying. Now with all the media attention brought to it, dealers in turn use this strategy to their advantage. Push the low number sets with ads relating to how quickly they sold out. People in turn pay more money. There are still plenty of 2001 Buffalo dollar sets found at all the major shows. Yet this set still commands a healthy premium?