Question on "Blue Buffalo?"?

If you're doing fine on the food then I wouldn't switch. That's a good quality food. However, if you do need to switch you generally can get a bag of Chicken Soup for the Pet Lover's Soul for around 30-35 dollars. It's a 30 lb bag, and you really get the best bang for your buck. It is a high quality food, but it still has those grains. Taste of the Wild is a reasonably priced, good quality food, that is grain free if you're wanting to go that route. A 28 lb bag is around 45 dollars.