Amazon offers its Amazon Prime members the Belkin Conserve Socket Energy-Saving Outlet, model no. F7C009Q, for $7.99 with free shipping. (Non-members can spend $25 or more to qualify for free shipping; otherwise, shipping adds $5.58.) That's $2 below our November mention and the lowest total price we could find by $4. This 120-volt, 1,800-watt energy-saving socket features a timer that can be set to 30 minutes, three hours, or six hours.

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. (Note that currently there's a waitlist for Amazon Mom.)