A friend of mine came back from Argentina sometime back told of a story where back in October 2007, the prices of tomatoes were going up by 50%. The president (President Nestor Kirchner) went on tv and said " "Don't buy from those people who for seasonal reasons are trying to rob us. There are sectors ... that want to increase earnings without increasing their production."
..... well, if fans were to group together and stop buying from Hermes - you might get the desired effect. But the truth of the matter is that all Hermes bag owners welcome the news of a price increase - it may give a sense that the bag you have is not only still very much in demand, but has actually increased in value.