TigerDirect offers the TRENDnet Powerline AV Ethernet Adapter Kit, model no. TPL-303E2K, for $49.99. Coupon code "YUK65839" cuts it to $39.99. With free shipping, that's the lowest total price we could find now by $17. (We listed it for $10 less April.) This plug-and-play Ethernet kit uses your existing electrical outlets to create a secure high speed (up to 200Mbps) building-wide network.