[ghaff]

King Arthur flour (one of the big national brands) at Walmart in 5 pound bags. They probably have their own brand which is cheaper.

[maxerickson]

Great Value flour here lists for ~$0.22 a pound in a 5 pound bag. Website says they are out of stock though.

(Great Value is the Walmart store brand)

[0xffff2]

King Arthur is absurdly expensive. I'd say Gold Medal is a much better benchmark and it's usually about half the price.