I'm paying $110 per hour. Sounds like a lot, but I was guided to this teacher after a series of auditions with another potential teacher who said I needed this level of training. He's an old Julliard grad (class of 1958), had Egon Petri as a teacher himself, he plays around the Bay Area mostly, and was involved with Joseph Campbell in the human potential movement. That's a lot of experience, so it costs a lot of bucks!
Egon Petri, Hungarian pianist (a few recordings still exist), from a family of musicians, the Petris were personal friends of Brahms. Egon remembers visiting Brahms when he was a child and going for walks in the woods with him and his parents as they talked music and life. It's rare these days to find a teacher who can still trace his lineage as a pedagogue back to one of the greats, so that figures into the cost, too. But most important, he's a phenomenal teacher from whom I am essentially relearning technique. Virtually everything he is teaching me I have found written about in detail on this forum (by people I have come to respect highly).
I should add I see him every two weeks, not weekly, so the cost is not so bad. As I work full time, I have only 1 hour a day to practice, so I need 2 weeks to prepare for a good lesson!