The more additional features one adds to a product, the higher the price becomes. My aim is to design value for money products, which means keeping the price down to suit the budget of my customers base. Just consider that the component cost of a remote control system and a motorized volume control is in excess of U$20 in bulk quantity of 1K. By the time you add those components to a system and the item reaches the end user, that U$20 will have grown to at least U$100 in added retail cost.