In my country they have to be called out on it, but to verify a discount, they have to prove that they were actively selling it at the undiscounted price for a period of about 4 weeks or so.
Unfortunately a lot of this is subverted by brands inflating the recommended retail price and then the stores just show a discount from RRP
I really enjoy the law in my country that requires companies to show alongside the current price the lowest price in the last 30 days.
Poland? We have that in Poland too.
In my country they have to be called out on it, but to verify a discount, they have to prove that they were actively selling it at the undiscounted price for a period of about 4 weeks or so. Unfortunately a lot of this is subverted by brands inflating the recommended retail price and then the stores just show a discount from RRP