So after one day of collecting data in this poll, it appears than only 5 of the respondents are paying over $250, and 33 respondents are paying in the $180 to $250 range. More respondents posted for 1 hour sessions, so I'm ignoring the 30-minute option.
Mostly I just think it's interesting that less than 15% play in the $280+ range, and yet to hear some people talk, it's the guys with deep pockets who drive rates up. So either that theory is suspect, or the poll results are skewed low. Maybe both.
By the way, there are 38 responses for 1 hour sessions, but only 34 people voted. I think some people may have selected more than one maximum.