This deal has ended.
Buy.com has the Zyxel NBG318S 3-in-1 Wi-Fi Router on sale for only $39.99, the lowest price online by a long shot. This acts not only as a router, but also a powerline adapter and fast Ethernet switch. Compare this price with $88 at hard-to-beat Amazon. Shipping is free (you need to select budget shipping) and there is no sales tax (except CA, MA, MD, NY, TN).