How much does this cost to the nearest dollar?

Voltaic Systems V25 USB Always On Battery Backup Power Bank for iPhone, iPad, Samsung Galaxy, Android, and HTC Devices (Gray)
The new V25 USB Battery pack features of power, pass through charging, and Always On mode. The V25 is ideal for providing backup power to smartphones, iPads, tablets, and other USB electronics. Features ● Optimized For Solar Charging ● Pass Through Charging ● Always On Mode ● Protection Short Circuit, Over Charge, Over Discharge, Over Current, Over Temperature SOLAR OPTIMIZED - High quality, high temperature Li-ion cells tested and optimized for solar applications. CAPACITY - / 23 watt hours provides 1.5 charges to smart phones,.65 charges to 7 tablets. Designed for use with Voltaic solar chargers

Price is $44.00

Price: $44