newegg offers the PQI Air Pen Express 802.11n Wireless Router, model no. 6W51-0000R2, for $14.99 with free shipping. That's the lowest total price we could find by $9. Purported to be the world's smallest router, it weighs slightly more than 1 oz. and measures 3.19" x 0.93" x 0.45". It features an Ethernet connection, WEP, WPA, and WPA2 data encryption, and can be powered via an external adapter or a powered USB port on your computer.