mags, i'm not exactly sure what the bounds of "upper class", "middle class," and "upper middle class" currently are, but i'm betting that most people ordering this burger, and eating foie gras, are generally speaking, upper-middle class. that probably means a household income of btwn 80 and 150 a year. not excessive, really, in and around NYC. and i don't think these folks are necessarily frivolous or excessive, generally speaking.