The last I bought was $22.99 for 40lbs of Nutrena All Flock pellets.
When I have chicks I get Purina Flock Raiser 50lbs at 26.99 because they carry it in crumble. I have fed chick starter unmedicated $24.49 for 50lbs to everyone if that was all I could get. The hardest problem for me is getting fresh feed. They do not rotate the stock.
I have several feed mills within driving distance that carry feed for around $15, but it is ground so fine with some small grain mixed in. My birds pick through it and throw it around a lot trying to find the bits. I end up with too much dust they won't eat.