It also depends on state legislature I believe. There was a customer that came up to me to tell me our signage was incorrectly detailing the price pr. oz or the product oz. (can’t remember which now) and I never quite understood why he cared so much. But apparently businesses can get fined or dinged per incorrect signage they have so?
Some stores in the USA will list price per oz on the whenever applicable, which is nice, but sadly just a store policy not any regulation.
It also depends on state legislature I believe. There was a customer that came up to me to tell me our signage was incorrectly detailing the price pr. oz or the product oz. (can’t remember which now) and I never quite understood why he cared so much. But apparently businesses can get fined or dinged per incorrect signage they have so?
In Germany we have price/100g or price/1000g for every store item.