Irrational exuberance or true appreciation for original comic art?

Fantastic Four #55 original by Jack Kirby, Joe Sinnott

Gerry Giovinco looks at the uptick in value of comic related art as seen in recent auctions and speculates as to why.

Forbes recently ran an article on their site that lists good reasons for investing in comic art but neglects the obvious: Supply and Demand.

Though it may seem that there are tons of original comic art proliferating in the market, and there are, how many show significant images of major characters drawn by masters of the industry or are pages from historic works? Not as many as you might think and now that a lot of art is created digitally, the chances of hard copy future original art surfacing for sale are dwindling.