Newegg offers the TRENDnet 200Mbps Powerline AV Ethernet Adapter Kit, model no. TPL-308E2K, for $29.99. Coupon code "EMCEKGM45" cuts it to $14.99. With free shipping, that's the lowest total price we could find by $15 and the best we've seen for this kit. This plug-and-play Ethernet kit uses your existing electrical outlets to create a secure 200Mbps high-speed building-wide network. Deal ends June 30.