Amazon offers its Prime members the Linksys Powerline HomePlug AV2 1-Port Gigabit Adapter Kit, model no. PLEK500-CA, for $32.36 with free shipping. (Non-members can qualify for free shipping with orders of $35 or more; otherwise, shipping adds $8.76.) That's $13 under our June mention and the lowest total price we've seen. (It's also a current low by $2.) These adapters plug into a wall power outlet to expand your home network, with an up to 500Mbps transfer rate.