To speak generally, I think prices have stayed about the same, when it comes to high end arrangers (at least on the wholesale side) if not gone up a little with inflation. Unlike consumer goods where you will sell to a vast market, high-end arrangers are sold to a limited group of people. The actual cost to manufacture arranger instrument isn't truly reflected in the cost of the instrument. The majority of cost is reflected in the research and development of the instrument. Those sounds and styles aren't cheap for a manufacture, as well as the actual technology that goes into the instrument. After creating the instrument, they need to re coop the companies investment in the product, so they look at how many units they will sell, and how much marketing cost etc. Then they ad profit to make it worth the expense. Then the company hopes the instrument sells as predicted and isn't a flop. As the mid and low level instruments are normally derived from a instrument that has already re cooped their losses in development, you will find them considerably less expensive.