Amazon offers its Amazon Prime members the Belkin Surgemaster 6-Outlet Wall-Mount Surge Protector, model no. F9H620-CW, for $9.99 with free shipping. (Non-members can spend $25 or more to qualify for free shipping; otherwise, shipping adds $5.58.) That's the lowest total price we could find by $9, although we saw it for a buck less four weeks ago. This surge protector features a 1,045-Joule rating.

Amazon Prime membership is $79 per year; however, Prime is free for college students for six months, and free for parents and caregivers for three months.