Tii Trading Inc. via Newegg offers the Rocket Socket 10,000mAh Power Bank/Jump Starter
with free shipping
. That's the lowest total price we could find by $31. It features a 400-amp peak to jump start a car, 3-mode LED flashlight, 10,000mAh power bank with key switch to change voltage, LED indicator, 6-in-1 laptop adapter, USB for phone charging, over-current protection, short circuit protection, and over-voltage protection.