“When you say dynamic pricing, the hair on the back of my neck kind of stands up,” says Joel Rampoldt, the CEO at Lidl US, part of the Germany-based grocery giant. “You see an electronic shelf label and the thought is going to occur to you, ‘Well this is a way to raise prices more efficiently and more quickly and to take advantage of situations,’ ” he says.

https://www.wsj.com/business/retail/surge-grocery-prices-electronic-shelf-labels-a3d47701?mod=hp_featst_pos4