Isn't that pretty easy to get around with better wording? eg. "2 for $x, min 2"Not if the same law doesn't permit minimums in order to get a discount. People on HN like to pretend that the people who write laws are completely clueless, but they've been doing it longer than we've been alive and know exactly what they're doing.
It helps to read the infinitesimally small print on the sale tag on the shelf. As I've moved from state to state and city to city you can tell where this sort of thing is regulated or not.
I shamelessly pull the tags off the shelves to read them. If the stores don't want me damaging the tags, they can simply make them in a size that's readable.