I didn't say where in the range I was, either, my comments were based on an assumption that Statlady is a beginner and dancing in studio showcases and probably not taking lessons with someone with a nation-wide reputation. The lower end of the range I've seen locally seems to be $65 (previously $60), which is what I've seen some studios charge for "staff teachers" who do not compete in pro-only events and who are good with wedding couples, beginning social dancers, and people who don't know what they're going to do yet who are just getting into dancing and possibly competing.
I'm not exactly a beginner as I took ballroom classes in college. All the teachers at my studio are on staff, so the cost is the same for all of them. I happen to have the teacher with most experience (competition and teaching) of any of the full-time instructors, so I'm happy about that. He doesn't have a nation-wide reputation, by any means, but IMO he's the best I could ask for. I don't think any of the students at my studio compete, as it is mainly a social dance club.
I'm not sure why I felt I needed to add that.