NCIX offers the TRENDnet 500Mbps Powerline AV Ethernet Adapter Kit, model no. TPL-406E2K, for $25.99 plus $3.99 for shipping. That's the lowest total price we could find by $12. (For further comparison, we saw this kit bundled with software for $0; however, it required a $60 mail-in rebate and software activation hassles.) This plug-and-play Ethernet kit uses your existing electrical outlets to create a secure 500Mbps high-speed building-wide network.