This discussion is applicable to the buying process and how much off "sticker" idea. Obviously, if a machine is two or three price hikes old, the "build your Kubota" feature, which is where people get the "sticker", I suppose, is higher than that for an aged machine, making the older machine look like a better buy.
Someone sat on that money, that the older tractor represents. If the dealers don't floor plan, then Kubota, the owner", takes gas on that investment until it's finally sold. They could use disincentives and positive incentives to keep from having equipment aging too long. I'm sure those things are built into the dealer's contract or license with Kubota.