Champagne price increases

Less than one year ago, 2007 Nicolas Francois (with WK rating of 97 points) was $112. Why did I buy only one bottle???

Meanwhile, the 2006 was very good, but not great. But at <$100, I was a quite satisfied buyer. Is most of the 2008 price increase driven by retailers or producer? Maybe the new price can be sustained by 2008 reputation, but how will they sell future less-hyped vintages?