Displaying the price you will pay at the counter is my personal benchmark for civilized society. No price tags? You're a medieval backwater. Wrong price tags? Go see a shrink, USA. Correct price tags is the way to go.
Would it change your assessment if they have dynamic price tags that you can only see with the aid of some network-connected augmented reality solution or an online catalog (that you access with a QR code you scan, geotagged software, or something along those lines)?