Newegg offers the TRENDnet Powerline AV Adapter Kit with Bonus Outlet, model no. TPL-307E2K, for $72.99. Coupon code "DAD6401" cuts it to $24.99. With free shipping, that's the lowest total price we could find by $15, although we saw it for $3 less in March. This plug-and-play Ethernet kit uses your existing electrical outlets to create a secure 200Mbps high-speed building-wide network. Each adapter features an Ethernet port and electrical socket with noise filtering.