Newegg offers the ZyXEL AV Powerline Wall Mount Ethernet Pass-Through Adapter 2-Pack, model no. PLA5215KIT, for $54.99. Coupon code "EMCAWKW87" cuts it to $44.99. With free shipping, that's $6 under last month's mention and the best price we've seen for this kit. (It's a current price low by $5). These adapters use your existing electrical outlets to create a secure high speed building-wide network. They support up to 600Mbps data transfer rates.