Newegg offers the Zyxel HomePlug MIMO Powerline AV2 Gigabit Adapter Kit, model no. PLA5456KIT, for $99.99. Coupon code "EMCKNNT33" cuts it to $59.99. With free shipping, that's the lowest total price we could find by $45. The adapter kit plugs into wall power outlets to expand your home network without running Ethernet cables through the walls.