Mwave offers the PremierTek 802.11n Wireless USB Adapter, model no. PL-H5DN-3070, for $12.99 with free shipping. That's the lowest total price we could find by $6. It features a max speed of 150Mbps, 5dBi dipole antenna, and support for WEP, WPA2, and WPA2-PSK encryption. Deal ends September 25.