What’s the reason this hasn’t happened everywhere yet in the US when it’s common in (the usual parts of) Europe? Less volatile prices? Cheaper labor that can run around changing the shelf labels? Or something else (inertia)?
In my part of Europe, half of the major retail chains have had this for quite a few years. I actually didn't realise what it was until one day I went in and it was broken, as all the price labels were flickering. The price displays use black and red eink displays in a plastic frame.
When I saw the photo in the article I thought, oh this is already available in my city in Romania.
I think it's the last one, inertia. A lot of people, companies, and governments here are slow to adopt stuff, especially tech. Look how long it took us to get chip cards and tap payments, and there are still places that don't have either.