The Prune Danish via eBay offers the Key Dual USB Car Charger for $2.99 with free shipping. That's tied with our mention from three weeks ago, $32 off, and the lowest price we could find. It features simultaneous charging and 2.4 amps per port.
Gear XS via eBay offers the SoundLogic USB Desktop Charging Tower in Black for $16.99 with free shipping. That's the lowest price we could find by $4. It features five ports, 4-foot long cord, and universal compatibility.