There are only 6 issues with Tony's art that exist. That's not artificial scarcity, that's ACTUAL scarcity.
Also, if it was overpriced it would never sell in the first place. The fact that someone bought it or resold it negates the possibility that it's overpriced. It's not a gallon of gas that can be purchased on any street corner, but you already knew that.
The artificial scarcity comes into play in the fact that Tony's prices have always been so ridiculously high that even now, 10 years later, he probably still has more than half of the pages in his possession. So, in any normal situation, there would be a full 132 pages in circulation right now. Instead, there are probably only half as many, each and every one of which was purchased at an eye-popping price at the time.
If the pages were really worth that much, they would have all sold long ago. But...the art was never priced at a point where everyone would buy a page...the price has always been priced at a point where MAYBE there is one person out there crazy enough to pay the primary price.
You're right, though...it's not a gallon of gas (though they are both flammable).