Some things are cheaper by the dozen. Here's an example.
Batteries are like firewood - buy ahead of the need to use. It's much more convenient. Like firewood batteries can be used for a long time in the future so it pays to stock up when the price is right.
We are having a 'Stock Up Sale' with 40 percent off AA and AAA 36 packs. They're regularly 26.99, or 75 cents each. Our sale price takes them down to $16.19 per pack, or 45 cents each.
That's an incredible bargain and will keep you stocked well into the summer.