Buy.com will have the Xbox 360 Wireless Network Adapter (Wi-Fi) for $70 with free shipping. This deal is scheduled to go live tonight at midnight PST.
Features:
- Wireless A/B/G home network-compatible: The Xbox 360 Wireless Network Adapter is highly versatile and supports 802.11b, 802.11g and 802.11a (Dual band 5 GHz and 2.4 GHz).
- Nothing to plug in: The Xbox 360 Wireless Network Adapter is powered by your Xbox 360 gaming console, so there’s no external power adapter to plug in.
- Stream photos and music from your PC: You can stream photos and music from Microsoft Windows XP and recorded TV, movies, and videos from your Microsoft Windows XP Media Center based PC.
- Connects to other Xbox 360 wireless accessories: It collaborates easily with Xbox 360 authentic wireless accessories for worry-free integration.
Link
Xbox 360 Wireless Network Adapter (Wi-Fi) $70 + FS 
