Amazon offers its Prime members the Belkin SurgePlus 10-watt Six-Outlet Surge Protector w/ Dual USB Ports, model no. BSV602, for $16.11 with free shipping. (Non-members can spend $35 to qualify for free shipping; otherwise, shipping adds $5.74.) That's tied with our mention from four weeks ago and the lowest total price we could find by $4. This 2.1-amp surge protector is wall-mountable for six extra AC outlets and includes two USB ports.