> With so many local taxing jurisdiction, it's essentially impossible. You can't honestly believe that only the US has different tax rates depending on which s

> With so many local taxing jurisdiction, it's essentially impossible. You can't honestly believe that only the US has different tax rates depending on which state/city you are in? Obviously it could be difficult but once the sale happens you need to know the final price. So if you can figure out when selling the good you can figure it out when advertising the good.