About the same as everyone else for a regular lesson. For a high end lesson/clinic spot for fine tuning from someone at the top of their sport, $100 an hour is reasonable to a bargain when you look at travel time and what you would have invest to get a lesson from a person of that skill level normally. For someone just starting out I would consider $100 a lesson to be high (because you are probably going to spend any lesson just working on the basics), unless the barn is also exceptional/a mini vacation spot.