It seems like no one commenting here actually read this article, which is about a grocery store in Norway that's been doing this for 10 years already, and uses it to try to undercut the competition by pennies
I live in Norway. We have one of the highest grocery prices worldwide, and the smallest selection of goods. Trips over the border for grocery shopping are a weekly ritual for those who live close enough. Small immigrant owned groceries manage to be cheaper than the giant chains with a thousand times the purchasing power. Please do not emulate Norwegian grocery stores. This article is marketing BS.
I did read the article. You're kidding yourself if you don't think they're immediately going to screw us over with this the moment they think they can get away with it.