Woot offers (8 PACK) Duracell Optimum AAA Batteries with Power Boost Ingredients for $7.49 (orig. $13.99).  Free shipping for Prime Members. 

Product Description:
Duracell Optimum AAA batteries, our #1 best performing alkaline batteries, are now formulated with 4X the patented POWER BOOST Ingredients vs Coppertop AAA. Compatible with any AAA battery-operated device, these AAA batteries are packaged in a slider pack with resealable storage tray for a more organized way to store your batteries. Duracell guarantees these batteries against defects in material and workmanship. From storm prep to holiday needs, Duracell is the #1 trusted battery brand for the moments that matter most. 

• FORMULATED WITH 4X POWER BOOST INGREDIENTS: Duracell Optimum AAA batteries contain 4X of Duracell’s patented POWER BOOST Ingredients vs Coppertop AAA
• OUR #1 BEST PERFORMING BATTERY: Duracell's Optimum AAA battery is our best performing AAA alkaline battery
• RESEALABLE PACKAGE: Duracell Optimum batteries come in a resealable package for quick, easy access and storage
• #1 TRUSTED BATTERY BRAND: From storm prep to holiday needs, Duracell is the #1 trusted battery brand for the moments that matter most
• QUALITY ASSURANCE: With Duracell batteries, quality is assured; every Duracell product is guaranteed against defects in material and workmanship
• AVAILABLE IN AA AND AAA battery sizes in 4 pack, 6 pack, 8 pack, 12 pack, 18 pack, and 24 pack