Etekcity via Amazon offers its Etekcity 3-Outlet 4-USB Surge Protector Power Strip in White for $16.99. Coupon code "G97UNI6M" cuts that to $14.99. Plus, Prime members receive free shipping. That's $19 off list and the lowest price we could find. It features four 2.4-amp USB charging ports, 5,610-joule surge protection, and a 6-foot power cord.