Best.Seller.CN via eBay offers the Aukey 12,000mAh Jump Starter / Dual USB Power Bank, model no. PB-C2, for $32.99 with free shipping. That's $17 under our mention from last October and the lowest total price we've seen for any 12,000mAh jump starter. (It's also a current low by $7.) It delivers up to 20 jump starts per charge and features two jumper clamps, two USB ports, and an LED flashlight.