A4C offers the Cobra Electronics 6,600mAh Dual Panel Solar USB Charger, model no. CPP 300 SP, for $24.95 with free shipping. That's tied with our mention from last week and the lowest total price we've seen. (It's a current best by $20.) It charges up to three devices at the same time and features an LCD display, two USB ports, and a microUSB connector.