PricePlunge offers the D-Link PowerLine AV 4-Port Gigabit Ethernet Switch Mini Kit, model no. DHP-348AV, for $18.99. Coupon code "SANDCENT1" drops the price to $18.04. With free shipping, that's $4 under our mention from May and the best price we've seen. (It's also a current low by $5.) It includes a PowerLine AV 4-port switch and a Powerline AV Mini Adapter, featuring 128-bit AES encryption, HomePlug AV support, and data transfer rates of up to 200Mb/s. Coupon expires October 28.