John makes a very good point here. It really is not about versions and models but about dollar values. To trade in say a pair of M60s for 2pr of QS8s falls into the upgrade category in terms of dollars. We really just need the original new selling price of the trade-ins to be less than the current selling price of the upgrades by some margin to make all the numbers work. I will work out what that margin needs to be and make this modification to the pilot program.
This seems to be much like the previous incarnation of the trade-up provision and I would guess how popular a particular model that has been returned might be for ease of resale. I, for one, who have a VP160, might be interested in trading in mine with the black oak finish for a VP160 in the custom "high gloss" black. Would this be feasible?
