I searched for a good month for affordable LC in the valley. (
Liquid Chlorine Price and Supply) Prices have even gone up since then. It wasn't even this high in the peak of COVID craziness.
Since you are in Chandler, you are close to my go to spot now. Price Busters Pool and Spa in Mesa has four 12.5% refills for $18 (tax included) (equal to 5 HD jugs)
You have to pay a small deposit to get started, but it has been well worth it . It is always fresh and I can tell the difference in freshness based on it's effectiveness compared to the HD and Lowes stuff.
It's also nice I don't have to toss all those jugs and stuff in the summer during peak usage.