For its newsletter subscribers only, newegg offers the ZyXEL Powerline AV 500Mbps Ethernet Adapter 2-Pack, model no. PLA4215KIT, for $152.99. Coupon code "EMCNBJD49" cuts it to $99.99. With free shipping, that's $49.99 per adapter and the lowest total price we could find by a buck, although we saw this 2-pack for $15 less in March. These adapters plug into wall power outlets to expand your home network without running Ethernet cables through the walls. Coupon expires August 22.