At the moment i'm feeding my chickens this 30lb bag from Petsmart.
Wal-mart has some chicken feeds and supplies but nothing organic though
There are tractor supply company stores here but they are a bit far from my house.
I came across this website
that led me to the buyer club website
this is the order page http://dykbz.vcmjx.servertrust.com/category-s/1852.htm
They have feeds available for order in bulk size. A 50lb layer feed is around $28. It's organic,non-gmo, non-corn, non-soy, non-canola. It has fish meal though.