BuyDig via eBay offers the uNu ECOPAK Protective Snap-on Case and Detachable Extended Battery for Apple iPhone 5
in 11 colors (Silver/Red pictured) for $29
with free shipping
. That's the lowest total price we could find by $34. The 2,500mAh lithium polymer battery purports to double battery life. It also features an LED battery life indicator and includes a micro USB cable. Deal ends February 15 at 12:35 pm ET.