Let's say you're at a coffee shop and you've just ordered a double latte.  The price on the menu board says $3.95.  You know there's 6% tax.  Then the barista taking your order says, "That'll be $7.50." As you reach into your wallet for a ten-spot you think to ask, "How did we get to $7.50.  I thought the price was $3.95?" "That's the cream and sugar and plastic spoon charge," the barista explains. "But I'm not going to use any c... Full Story