My n=1 - I live in a pretty upscale American city, and ~$15 will get you a very nice burger and fries (no drink) at some of the most upscale restaurants in town. Pay attention to their Happy Hours, and it's more like $11 or $12 (so you could add a soft drink). A huge portion of meaty lamb roganjosh & rice at my favorite Indian take-away is $16. Why would anyone ever want to go near a McDonalds?