For me it's about $44 CDN for 1 hour, but she does combo packs where you can buy a certain amount of lessons and get big discounts. She also sometimes throws in free lesson time - she gave me an extra hour one day. I'm lucky! :)
I pay $50 for a half-hour private lesson and $35 for a group lesson. The lessons would be cheaper if I went to a barn further outside of the city but I would end up paying the difference with gas for my car, so it works out in the end. :)
I pay $40 for 80 minutes with a very experienced trainer/instructor. She is 66 and I hang on her every word. She rescues horses and does a great job getting them fit again. She considers the $40 a donation to the horses. I usually give her more and bring bags of treats, extra brushes and hoof picks too.