With few local options, I buy my groceries at Walmart. One thing I hate about it is that the pricing, at least in my Walmart, is never clearly listed on the shelf. It makes comparison shopping impossible.
German grocery brand Penny has rolled out a new line of "Price Packs," which I consider to be brilliant packaging design. Across a line of their staples, the price is in big, fat numbers across the front of the packaging.
"In a world of constantly fluctuating prices, the Price Packs serve as a promise of price stability," AdAge writes. "And they are also designed to make it easier for consumers to spot a good deal, particularly next to the higher prices of big brands on the same shelves."
The idea behind the "promise of price stability" does require the consumer to understand that packaging takes time to re-do. I think that might be too big an ask of your average American consumer, but perhaps it's more obvious in Germany.