NothingButSoftware offers the Maxell AA Alkaline Battery 48-Pack, model no. 723443, for $10.16 with free shipping. That's $0.21 per battery, tied with our November mention, and, outside of the price below, the lowest total price we could find for this quantity by $2.

Amazon offers it for $10.55 with free shipping when you add it to your cart via Subscribe & Save. (Be sure to cancel Subscribe & Save once your order ships to avoid being billed for subsequent shipments.)