Amazon offers the Energizer 123 Lithium 3-Volt Battery 6-Pack
, model no. 30039800100635, for $7.73. Order via Subscribe & Save to cut the price to $7.34
and bag free shipping
. That's the lowest total price we could find by $15. They're designed for digital cameras, high-tech flashlights, flash units, rifle scopes, and night-vision goggles.
Be sure to cancel Subscribe & Save after your order ships to avoid being billed for subsequent shipments.