Amazon takes an extra $4 off
select Duracell batteries
when you clip this coupon
. Plus, several items qualify for an extra 5% off
and free shipping
when you order via Subscribe & Save. (Otherwise, Prime members get free shipping, or non-members can spend more than $25 to get free shipping.) With prices starting at $3.14
, that's the best such offer we've seen on batteries from Amazon since last winter, when it offered a $5 Amazon credit on select batteries.
A best bet is the Duracell 28a Medical Battery 3-Pack (pictured), model no. 041333228051, for $3.14 with free shipping via the above discounts. That's the lowest total price we could find by $24.