Buy.com offers the refurbished Linksys 54Mbps 802.11g Wireless Access Point / Router, model no. WRT54GS2, for $16.99 with free shipping. That’s $74 under the lowest total price we could find for a new unit. It features a 4-port router, firewall, support for WEP and WPA2 encryption, SpeedBooster, and more.
A 90-day warranty applies, although it’s unclear who supports it.