Amazon has 100-Pack AmazonBasics AAA Alkaline Batteries on sale for $14.94 when you 'clip' the 30% off coupon on the product page (located under the Subscribe & Save button) and checkout via Subscribe & Save. Shipping is free. Thanks Tiger56
Note, must be logged in to clip coupons; coupons are typically limited to one per account. You may cancel Subscribe & Save anytime after your order ships. Select the later date from the "First Delivery On" menu to get traditional S&S checkout instead of adding to your cart.