Ending today, Supply Warehouse via Rakuten Shopping offers this Duracell Duralock Coppertop 100-Pack of AA and AAA Batteries for $30. Apply coupon code "VISAWEEK6" and check out via VISA Checkout to drop it to $20. With free shipping, that's $13 under our February mention and $25 below the lowest total price we could find for a smaller amount of AA and AAA Duracell batteries elsewhere. It comes with 70 AA and 30 AAA batteries.