As an American, I'm used to our system, but I don't like it ... but, the tricky part in the US is that sales tax(es) aren't national, so prices differ at state,

As an American, I'm used to our system, but I don't like it ... but, the tricky part in the US is that sales tax(es) aren't national, so prices differ at state, county, city, and sub-city areas. I single café can build the tax price into their prices, which I do see occasionally, but there's no way to advertise a price of a something, including the tax, nationally (or even across all of my city, Minneapolis, for example).