Earlier quoted context omitted.
That and the way our income taxes work are two of the most annoying things that the anti-tax right have "won" in the US. Everyone's life is made a little worse all the time , in the name of some I-suspect-imaginary "awareness campaign" to increase resistance to taxes. In fact I doubt there'd be any less awareness if they'd just mandate that tax be itemized and given sufficient weight on receipts, and that the IRS mai…
It has way less to do with any "awareness campaign" and more to do with how tax rates are different in many municipalities that are very close to each other and how hard that makes advertising. For instance, the famous "$5 footlong" from Subway couldn't be advertised that way nationally, or even within a single state or metro area due to different taxes on prepared food.
I'll note that the costs of labor, space, and other inputs also can vary widely across a state, so tax differences don't strike me as unsolvable. And regardless, "prices and participation may vary" is an extremely common disclaimer for ads with prices.