I do take your point Diki, its not nice to know that your paying for something someone else is getting for half the price.

The arrangers do have a whole lot more software development to take into consideration though, and these days 'that' time is likely more expensive than the components they are made of.

Unfortunately someone has to pay for the research costs and its normally the flagship buyers. So Tyros owners probably paid for the bulk of R&D of the S910 and over a period of years it will filter right down through the product line so that eventually the little keyboards in schools will have SA voicing and song libraries.

If it didn't happen this way you would never have lower cost items at the low end. Can you imagine the price of, say a Hammond XK1 if the cost of developing VASE III had been passed on to that keyboard instead of the B3?