Best.seller.cn via eBay offers the Aukey 12,000mAh Jump Starter / Dual USB Portable Battery Pack, model no. PB-C2, for $29.99 with free shipping. That's a buck under our March mention, the best deal now by $23, and the lowest price we've seen outside of other eBay vendors. It delivers up to 20 jump starts per charge and features two jumper clamps, two USB ports, and an LED flashlight.