Indeed, but this is completely baffling to anyone in Europe. Simple example:
In the US, if I have $5 in my pocket, I can't go to a store and buy a thing that's listed as costing $5.00, because at the cash register some more money has magically appeared on the bill.
In Europe on the other hand, you pay at the register the exact amount that is on the price sticker.
And yes, I know the difference is due to taxes not being included in the sticker price, but why oh god why is it up to me to do weird math to figure out if I actually have enough $$$ to pay for what I'd like to have.