AltaTac via eBay offers the Enercell 3-in-1 Portable Universal Combo Car Charger, Wall Charger, and Power Bank in White for $5.99 with free shipping. (Action Gear via Amazon has it for a few cents more.) That's tied with our mention from two weeks ago and the lowest total price we could find by $3. It features a 1,350 mAh cell capacity and supports most portable devices with USB.