Amazon offers its Prime members the AmazonBasics AAA NiMH Precharged Rechargeable Batteries 12-Pack (pictured) for $10.99 with free shipping. (Non-members can get free shipping on orders over $35; otherwise shipping adds $5.74.) That's $0.92/battery and $16 under the lowest total price we could find for this quantity of batteries elsewhere.

Also available is the AmazonBasics AA NiMH Precharged Rechargeable Batteries 4-Pack for $4.99 with free shipping via Prime. That's $1.25/battery and $5 under the lowest total price we could find elsewhere for a similar quantity.