In general the older saxophones represent an era where craftsmanship was available everywhere and the wages were low. There you find the masterpieces. The older instruments are becoming more and more expensive. Buying a quality instrument is a good way of investing your money e.g. in the Conn Ladyface or the "The Martin". In the more expensive countries such as Japan and Germany the prices are increasing rapidly at the moment. The price of a Mark-6 is already very high world-wide.