if I could buy new loaded ammo for less I sure would!!
I cast my own bullets too, so mine run about the same cost. I just pay for powder and primers, both bought in bulk. Between my wife and I, we shoot about 1,000 rounds per week on average. It would be a significant cost if we were shooting commercial rounds at Canadian prices - at least $15,000 to $20,000 per year.
Many of the world's best shooters load their own, and would continue to do so regardless of the cost of commercial rounds. Shooters like Eric Grauffel or Brian Enos would faint if they were forced to have someone other than themselves crank they press. How much is their time worth?