48-ct Packs of Batteries on Sale ONLY $9.99 Each! This post may contain affiliate links. See the Disclosure Policy for more details.02/27/2017 Kate Sorensen Leave a Comment Head over to Best Buy here where you can score 48-ct packs of Insignia brand batteries for only $9.99 each. This makes each battery only 21¢ which is a heck of a price! Get the AA Batteries here and the AAA Batteries here.