$5,000 for a $10 Lincoln!?

At a recent GreatCollections auction see here a lowly 1954-D MS66 BN CAC went for over $5,000 when auction fees included. It seems the rainbow color craze that has come to dominate Morgan collectors has hit the Lincoln cent community.

1954-D $5k-2.jpg

Christopher Collection is more than curious to see where pricing goes for these colorful gems. Poor PCGS, how do they determine a proper price guide value when one MS66 sells for $10 and another for $5,000?