The VAT tax issue was just a smokescreen in my opinion. The real reason for the price increase was so Rolf could pay his growing staff and to elevate his own income to something more appropriate. If he had simply told everyone these were the reasons for the price hike, I think most including myself, would have completely understood. Nobody is going fault an independent developer for raising his game price so that he can continue to support the people who are adding amazing features to the game.