It's less about being hard to calculate and more about being annoyingly unnecessary. A basket of 10 random goods in a grocery store may have wildly different t

It's less about being hard to calculate and more about being annoyingly unnecessary. A basket of 10 random goods in a grocery store may have wildly different taxes applicable to them.. there are sales taxes, sin taxes (on tobacco, alcohol, etc), and others. These aren't listed on the price tag, so are essentially hidden. Here in Fiji, I walk into a grocery store with $100 and can arrive at the checkout counter knowing I have $98 worth of goods and can expect $2 change for my bus fare home. I don't even have to know how to multiply numbers to figure this out... simple addition gets me there.