And it's so often wrong that you better be doing sanity checks if you use it for anything.

Is it often flat-out wrong where you live?

My most-common frustration with it is when products I want to compare don't have the same quantity-denominator. (Either a different unit, or sometimes a different dimension like weight versus volume.)

	▲	gdulli 6 hours ago \| parent [-]
		I've many times seen it wrong but more often the same item will have some tags expressed on cost per ounce, others per lb, etc. To discourage comparison. But I dont think people are paying much attention to those numbers anyway. Math has become a scary topic for them altogether.