So you never know the real price you'll have to pay of something you want to buy, unless you know the tax laws of the country you are in? And maybe at the checkout you will find out that you cannot afford it? That's weird, but I have already heard of that before and I think you are used of it, but tourists are certainly surprised when they go shopping ;)
A !BEER has to be cold and a !COFFEEA has to be hot to taste good and not !DERANGED 😉