Buffalo WHR-G300N 802.11n Wireless-N Router for $29.99 shipped.  Here is a screenshot for your reference.  For the technically inclined, this wireless router is compatible with DD-WRT to perform a variety of advanced functions.  It supports wireless-N at up to 300Mbps, has 4 in-built Ethernet ports, and supports QoS.  Most places have it for about $45.