TigerDirect offers the TRENDnet 500Mbps Powerline AV Ethernet Adapter Kit, model no. TPL-401E2K, for $49.99 plus $2.99 for shipping. That's tied with our expired mention from three days ago and the lowest total price we could find by $7. This plug-and-play Ethernet kit uses your existing electrical outlets to create a secure 500Mbps high-speed building-wide network.