newegg offers the TP-LINK 802.11n Wireless 5-Port Broadband Router, model no. TL-MR3220, for $24.99. With free shipping, that's the lowest total price we could find by $15. This router, when connected to a 3G modem, can switch to that network if the wired connection fails. It features five 10/100 ports, WPA/WPA2 encryption, and more.