Circuit City via eBay offers the Amaryllo Atom 1080p 360° Auto-Tracking Security Robot Wireless Camera, model no. ACR1501R11WHUS, for $189 with free shipping. That's the lowest total price we could find by $41. It can be controlled via a mobile device and features up to a 1920x1080 (1080p) resolution at 30 fps, 360° auto tracking, 24-hour motion and facial recognition, 2-way audio, night vision, 256-bit encryption for security, 32GB local storage, and automatic recording to Atom's free cloud server.