newegg offers the refurbished Netgear Dual Band 802.11n Wireless 4-Port Gigabit Ethernet Router, model no. WNDR3700-100NAR, for $54.99 with free shipping. That's the lowest total price we could find for a refurb now by $13, although it was $1 less in June. This dual-band router purports to have twice the available bandwidth of standard routers. It also can share a USB storage device via its USB port.

Note: It comes with a 13-month warranty, but it's unclear who supports it.