thanks guys all of your answers helped me a lot.

So i come in today and i tell him that i want an eighth, and he says that he usually charges 60, but he can do 50 for my first time. He said i wouldn't find much if any cheaper than that, and i asked around and people said 50-60 was normal.

I live in Wilmette, which is a pretty rich suburb of Chicago. How come its so much more than what people estimated ($20) ?