The most expensive cocktail I've ever had was at Duke's Hotel in London. If I'm recalling correctly, it cost me £17. Now, a $17 cocktail is one thing — expensive, yes, but not unheard of, at least in New York — but a £17 cocktail is something else altogether. That single cocktail, a very stiff, very dry martini, set me back $27. And it was totally worth it.
Let's take a look at the math. (Don't worry it's not complicated.)
Why That $25 Hotel Bar Cocktail Is Totally Worth It — The Hotel Bar