What’s the most expensive meal you’ve ever had? Perhaps a nice steak at one of America’s best high-end chain steakhouses or a tasting menu at one of the best restaurants in America? No matter how high the bill was, we bet it didn’t come close to what your final tab would be at New York City’s Masa, which very well might be the most expensive restaurant in America. Just about any restaurant can be super expensive if you sit there for hours and order tons of food and vintage bottles of wine. And likewise, you can have a cheap meal at even one of America’s best steakhouses if you just order an appetizer and water. But only a relatively small number of restaurants charge a flat fee for a set menu, where there’s no way to weasel out of dropping a wad of dough — sometimes several hundred dollars — just for walking in the …