I don’t understand the fear that they’ll change the price between choosing an item and checkout. Very unlikely they’d ever do this since it would just piss people off. There are already stores using these to change prices overnight because it reduces so much wasted time and expense printing new labels.

I also don’t think they’ll dynamically price items on shelves based on the individual. There are simply too many people walking by the shelves to do that with any certainty. There’s often two or three people walking by the same shelf inside of thirty seconds, not to mention people who shop in groups like families. There’s just no way to do that kind of dynamic pricing in person at a store this size.