Not sure if it's local or national, but Menards has 12.5% pool chlorine on sale... Buy one gallon at $3.99 get one free. Sale is until early-mid May (around the 11th I think). No limit that I saw (I bought 6 gallons). That is the best price I have seen at $0.1247 per oz. of chlorine ($3.99/256 oz./12.5%). Aldi which is usually the cheapest for me runs around $0.21 per oz.
