mwave offers the PremierTek PowerLink 802.11n Wireless Outdoor High Power USB Adapter, model no. PT-H9DN-ROC, for $24.99 with free shipping. That's tied with our mention from July and the lowest total price we could find by $3. It features a weather-proof housing for outdoor installation, max speed of 150Mbps, purported operating distance of up to 0.93 miles, 9dBi antenna, and support for 256-bit WEP, WPA2, and WPA-PSK encryption.