Sellers do not know the laws or hide their violations.
I bought the product at the price that was indicated on the price tag. At the checkout, they punched another one. The difference was 60 rubles. I demanded to punch at the price that was on the price tag. The seller said it was a different product, went to the price tag, tore it off and wrote a new one. Since I needed this product, I had to buy it. But next time I won't come to this store.
It is a pity that our stores are operating dishonestly. I hope that soon a worthy other will appear in his place!