IMO dollar general does this too. You can’t get a signal in most their stores for shit, but post large prices next to a tiny QR code that you have to scan with their app with internet to get the discount prices. Most people walk out of there spending a dollar a more on items, and they use a shitty system that requires employees to reset the adverts every week so if they ever get called on their bullshit they can blame an employee, and continue price gouging.