Well, the lower bound is actually zero, if you know where to go (and some art houses do charge). Also, the price depends on the theater+day+time, not on which

Well, the lower bound is actually zero, if you know where to go (and some art houses do charge). Also, the price depends on the theater+day+time, not on which specific movie it is showing, so, while price certainly correlates with movie budget, it doesn't capture most variation.