There were many, many other record breaking sales in various grades between the first sale of this 9.4 a year and a half ago, and that comic connect auction you reference from last May, that I have already detailed here in great lengths that disprove your theory on that.
Sufficeth to say, we will just have to agree to disagree on that point.
As I said, last year's price $450K was already established a year before with Metro's WTB prices. It was not a surprise.
Based on how the market accepted the new prices from the March CC auction (which were a surprise), it was a given that the next 9.4 would go for well over the highest, previous 9.0 or 9.2 sales.
In a year we'll know which one of us was right. ;-)