P(f) Bakery Mountain

Old bakery items are usually marked down so that by the end of the day, you can pick up a baguette or other specialty bread for cheap. Unfortunately, items are either marked down or full price. The freshness of a loaf, however, is a gradient, starting from fresh and gradually working down to stale. So I'm proposing an automated system to correct this discrepancy.

Consider a mountain roadway. It winds around the mountain like the thread of a screw. Now in the bakery section of the supermarket, apply the same principle, except replace the road with a slow conveyor belt. Items start at the top of the mountain, at 100% price, and slowly work their way down, so by the time they get to the bottom, they are dumped into a bin and only cost a fraction of what they intially did.

The mountain is just a gimmick used for approximation of price; the actual cost is determined by a computer algorithim when the item is scanned at the checkout. Also, it wouldn't be a pyramidal mountain, but more like series of superimposed conveyor belts that wind around a wall. There could also be various belts that run at different speeds, for some classes of bakery items might have a lower average turnover rate then others.