Amazon has the TP-LINK AV500 Gigabit Powerline Adapter, model no. TL-PA511, for $29.99 (39.99 – 10 instant savings) with Free Shipping for a limited time.

TP-LINK 500Mbps Gigabit Powerline Adapter TL-PA511 turns your existing powerline into a high speed network with no need for new wires or drilling. No configuration is required, simply plug your adapters into your power sockets and you can establish networking infrastructure in a flash. With a speed of up to 500Mbps, TL-PA511 transmits multiple HD streams and even 3D movies to every room, making it a great choice for an easy to build multimedia entertainment network.