For newsletter subscribers only, newegg offers the ZyXEL AV Powerline Wall Mount Ethernet Adapter 2-Pack, model no. PLA4205KIT, for $107.99. Coupon code " EMCNGHH52" drops it to $79.99. (Amazon charges the same but with limited stock.) With free shipping, that's $10 under our fall mention and the lowest total price we could find by $35. These adapters use your existing electrical outlets to create a secure high speed building-wide network. They support up to 500Mbps data transfer rates. Coupon expires March 28.