I live in Ontario, Canada. I board at a fairly new, hunter/jumper facility (2 years old). We are a "show barn". We attend all the bronze/trillium shows, and some attend almost all of the "A" (gold) shows. That being said, I pay $525 +hst, for board (indoor), $200 for lessons (twice a week), and then the obvious farrier and vet bills. I pay $100 every 6 weeks for farrier and vet varies due to annual shots, etc. So all in all, I pay about $900/month. Amazingly, for a higher quality show barn, it's not the most expensive place, but also not the cheapest.
What are your costs for boarding/lessons and (or) leasing?