Newegg has LINKSYS WUSB300N IEEE 802.11b/g, IEEE 802.11n Draft USB 2.0 Wireless-N Network Adapter 256-bit WEP, WPA and WPA2 Encryption Security - Retail for $39.99 + free shipping.
Coupon : EMCMLNL37
High-speed Wireless-N (draft 802.11n) networking for your desktop or notebook PC
MIMO technology uses multiple radios to create a robust signal that travels up to 4 times farther and reduces dead spots
Up to 12 times faster than Wireless-G, but can also connect to Wireless-G and B networks
Performance Investment Protection: Compatibility with Wireless-B (802.11b) and Wireless-G (802.11g) Standards
Easy to use Setup Wizard
Plug-and-Play Operation Provides Easy Setup
LINKSYS WUSB300N Wireless-N Network Adapter $39.99 FS 
