There's also just straight up demand for worse products at a lower price. To wit: many luxury goods 'outlets' now sell lines produced exclusively for the outlet market rather than unsold merchandise from the primary retail channel. If there isn't product in the outlet stores, that segment's demand is met by a competitor.

Of course, there's an argument that this is just to protect the exclusivity of the primary retail channel, and that increased prices in that channel cover any losses from destroying, rather than down-binning unsold merchandise. The same argument might also apply to HEDT processors :)