Here's some math on batteries. Because it's 2020, and who would have thought that we'd still be buying these all the time?
Brand: ACDelco Size: AAA
$4.99 / 10 batteries = $0.50/battery
Brand: ACDelco Size: AA Size: AAA
$14.70 / 20 batteries = $0.74/battery
$9.72 / 12 batteries = $0.81/battery