Whoah, some of you are paying WAY too much for lessons!
The least I've ever payed is $15 the most is $35. All hour lessons.
I pay $30 for an hour group lesson which, depending, can count as semi-private really. I live in NY and train under an instructor which has won shows and ride on the school's horses. (Some I ride could be considered "show" horses).
The MOST expensive lesson I've seen around here is $50. That's for a super-fancy barn with XC courses, a jump arena (though my barn has that too), top-quality instructors and horses, etc.
I exercise ride and do beginner rider lessons to pay for my rides. I don't have an istructor, although many times I'll join the advanced riders and their instructor, who I really like, if theres an empty slot. If I did pay though, our barn does $30 an hour if you pay for six lessons at a time, and $35 if you pay for four at a time. J