Your estimate is "about $8" but 7.32 + 0.70 is 8.02, which you can't pay for with $8. Your example is actually a great illustration of why expecting people to

Your estimate is "about $8" but 7.32 + 0.70 is 8.02, which you can't pay for with $8. Your example is actually a great illustration of why expecting people to calculate taxes in their head doesn't work. If you are trying to buy a product priced at $7.32, you can't easily tell whether $8 is enough. No one should have to multiply 9.25 by 7.32 in their head to know whether they can buy something. Enough with this insanity. If the price is $8, then $8 should be enough!