Newegg offers the TP-LINK 802.11n Wireless USB 2.0 Adapter, model no. TL-WN722N, for $9.99 with free shipping. That's tied with our July mention and the lowest total price we could find by $5. It features a 4dBi omni-directional antenna, a maximum data transfer rate of 150Mbps, and 64-bit/128-bit WEP/WPA/WPA2/PSK/2-PSK support.