For its newsletter subscribers only, Newegg offers the ZyXEL AV Powerline Wall Mount Ethernet Pass-Through Adapter 2-Pack, model no. PLA5215KIT, for $84.99. Coupon code "EMCPBHA48" cuts it to $59.99. With free shipping, that's $15 under our June mention and the lowest total price we could find by $25. These adapters use your existing electrical outlets to create a secure high speed building-wide network. They support up to 600Mbps data transfer rates. Deal ends September 1.