Best Buy offers the 5th-generation (current generation) Apple AirPort Extreme 802.11n Wireless Gigabit Base Station, model no. RF-MD031LL/A, for $99.99 with free shipping.  That’s $49 under the lowest total price we could find for a new unit. This 802.11n wireless 4-port Gigabit router has a USB port for sharing a printer or hard drive and works on both 802.11g and 802.11n frequencies simultaneously.