Bestek via Amazon offers its Bestek 6-Outlet Surge Protector Power Strip for $20.99. Coupon code "84WF6M6G" cuts that to $17.84. Plus, Prime members bag free shipping. That's $33 off list and the lowest price we could find. It features an integrated 15-amp circuit breaker, 6-foot cord, and four 4.2-amp smart-charging USB ports.