Reminds me of stories from ex-Yu during high inflation periods (e.g. yearly doubling; not counting periods when there were runaway spikes of almost daily doubling) when people would go to remote areas where shops didn't yet get the updated prices from headquarters and basically walked away with a bunch of near free stuff.
Small independent shops are often having trouble with keeping up with the prices, so checking out those shops sometimes yields great deals.
They should clearly buy e-ink price displays! /s