I was super-annoyed when first time in USA to find out I had to pay more at the cashier. Also it makes products seem cheaper than they really are - it's a cop-o

I was super-annoyed when first time in USA to find out I had to pay more at the cashier. Also it makes products seem cheaper than they really are - it's a cop-out to display pre-tax prices if you're billing more at the counter. Are people shopping with a calculator?