Hm, Different regions = different options, maybe. I spent $40 for 30 pound bags of dog food when I had a dog a few years ago. Pretty sure it hasn't gone down. Since it was a few years ago and I fed Blue Mountain salmon, I checked Chewy - it seems $25 for 46 pounds of Purina One.
Vs $12 for 25...
What is the reasoning for this instead of chick feed or grower?
When the chick feed or grower has all the needed nutrients in the needed proportions. And costs less.