As of a late 5/14/17 re-check, the price jumped close to $20…
The price of the 100pk of AC Delco single-use AA batteries is now down to $13.12 at Amazon by Amazon itself with a limit of one set per customer during the sale. Or you can set up a “Subscribe and Save” which further drops the price, but keep in mind, future Subscribe-and-Save deliveries will be at the future time-of-shipment price, not the current price. You can adjust, postpone or cancel Subscribe-and-Save any time without hassle. These average 4.4 out of 5 based on 900+ customer reviews. This is 7.62 batteries per dollar with the standard purchase and even more with the Subscribe-and-Save price.
It looks like the AmazonBasics AA 100-pack is chasing them downhill in price, they are now going for $13.74 with up to three 100-packs per customer. These come out to 7.28 batteries per dollar.
OSHA disclaimer: you can only use whole batteries. Fractional batteries are mentioned above only for the express purpose of price comparison between the various offers. Do not use fractional batteries. Do not try this at home. Do not eat batteries. Properly recycle or dispose of at the appropriate facilities. Restrictions may apply. This is an out of control paragraph that is totally unnecessary and I need to stop writing it and press publish NOW 🙂
If you are a fan of AC Delco single-use AA alkaline batteries, their 100-pack of “AC Delco Super” are on sale for the very specific price of $15.07 at Amazon by Amazon itself, with a limit of one set per customer. These are also available through “Subscribe and Save” (SaS) for $14.32 or less. Keep in mind, with “Subscribe and Save”, future orders will be at the future-current prices, not the price you pay for the first shipment. But you can get 5-15% off on the then-current prices depending on how many SaS items you have that month.
If you need more, the AmaznoBasics 100-pack goes for the very specific price of $15.79.
If you like to boldly-go and try new battery chargers, the AC Delco 4-slot AA/AAA slow-moving charger bundled with two AA 2000 mAh low self-discharge batteries is currently on sale for $9~ by Amazon itself or for even less if you buy it with “Subscribe and Save”. Food items are not the only ones eligible for “Subscribe and Save”, consumables (in a broader sense) are participating too. It has no customer reviews, so you can be the one to boldly go and inform the masses 🙂 Batteries must be charged in pairs. This is a slow-moving / overnight type of a charger which is a plus or minus depending on what you prefer/need.