In The EU such practices still exist. The joke is about applying reduction on the manufacturers recommended list price. After the sales period you list the item again for the usual price which might be lower than the manufacturers list price + reduction. All completely legal.
Yeah, but you don't have to do it like this, there is a much simpler way: just do it illegally. Pretend that the laws do not exist. This is how basically
everybody does it here on a regular basis.
Every 5 years authorities find some absolute worst offender company and set some ridiculously low penalty payment like 100k€ for them with the condition it becomes payable if they continue breaking the law during next month. Then they either just pay it, or try how it feels to obey the law for a month only to then go back to illegal activities for the next 5 years; whichever is deemed better for their bottom line.
Really, the only way to have effective legislation is to define
personal sanctions, written in the law directly, with significant fines paid from own pockets, or better, jailtime, even short. In other words, increase the scope of what are considered
criminal offenses.
But that will not happen, and legislation is thus full of so-called dead bills.