Amazon has the TP-Link AV1000 1-Port Gigabit Powerline Adapter, model no. TL-PA7010 KIT, for $39.99 (regularly $49.99) with Free Shipping for a limited time.

The TP-Link AV1000 allows you to get gigabit speeds through your electrical outlets for improved coverage. Easy plug-and-play set up in minutes, no need to configure or install software.