Not this specifically, but with a totally electronic system and no point of sale to anchor there is large opportunity to easily and programatically have dynamic pricing at the known individual level. Supply, time of day, whatever can be instantly baked into a pricing system.

And why not? No humans needed to change pricing. Plus i would think you could scan to get "your" price. Prime member $x. Etc..

I hope i did not imply this was happening now..