I'm actually extremely surprised that volatile prices aren't already common in the US. The grocery chains here in Norway update prices across the country as soo

I'm actually extremely surprised that volatile prices aren't already common in the US. The grocery chains here in Norway update prices across the country as soon as they notice that competitors sell the same products cheaper (provided they want to be the cheapest for that product), often several times a day. ESLs have been very common in big stores since perhaps 2013. Our BestBuy alternative Power actually had a big ad campaign last year about how their digital signs and their price robot allows them to offer lower prices than what their competitors offer.