Walgreens has a $3.00 off coupon for any Energizer lithium battery size which can be combined with a $3.00 manufacturer coupon for a $6.00 discount per package. I think they're both good through the end of the month. Just do a google search for 'energizer lithium coupon' and the $3.00 manufacturer coupon will be at the top of the results.

That's a pretty good deal - I'm stocking up on the 9x/20 Year AAAs for my headlamp at $6.09 per pack of 4, tax included.