Amazon has the Linksys WUSB300N-RM Wireless N USB Adapter(Refurbished) for $29.24 with free shipping.
Features:
- 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
Amazon.com: Linksys WUSB300N-RM Wireless N USB Adapter(Refurbished): Electronics
Linksys WUSB300N-RM Wireless N USB Adapter(Refurbished)$29 + FS 
