Pretty much not for me. I both have a bunch of products imported from receipts over the years, and I remember many per 100g prices for products I regularly buy. This simply does not happen, at least not at the stores I shop for the products I buy (note that I don’t buy any finished meals or processed food outside the occasional salami, so my habits are pretty different from most people).
Same, I track the prices of a few dozens of products across the six supermarkets I go to, in France and Belgium (every day, automatically) and this has never happened.
