Amazon offers Prime members the Panasonic eneloop AAA Rechargeable Batteries 8-Pack, model no. BK-4MCCA8BA, for $14.99 with free shipping. (Adorama offers it for the same price. Non-members can spend $35 to qualify for free shipping; otherwise, shipping costs $6.07.) That's the lowest total price we could find by $3, although we saw it for $5 less three weeks ago via rebate.