For its newsletter subscribers only, newegg offers the TRENDnet 200Mbps Powerline AV Ethernet Adapter Kit, model no. TPL-308E2K, for $39.99. Coupon code "EMCXNWV59" cuts it to $29.99. With free shipping, that's tied with our April mention and the lowest total price we could find by $10. This plug-and-play Ethernet kit uses your existing electrical outlets to create a secure 200Mbps high-speed building-wide network. Deal ends July 14.