Amazon offers Prime members its AmazonBasics AAA Rechargeable Batteries 8-Pack for $9.99 with free shipping. (Non-members can check out via Subscribe & Save to bag free shipping, but be sure to cancel your subscription once your order ships.) That's tied with our mention from two weeks ago, $2 off, and the lowest price we could find. They come pre-charged and last through a purported 1,000 recharge cycles.