Honestly, Blue Buffalo is DRASTICALLY over-priced for the quality. It's good quality, but you could buy a premium grain-free kibble for the same price. If Blue Buffalo is actually the best kibble available in your area, it's still a good food.
I would check to see if tractor supply carries Natura products (Innova, Evo, California Natural, etc), Taste of the Wild, Orijen, or other premium grain-free/low-grain kibbles.