Best Buy via eBay offers the Arlo Pro WiFi 4-Camera Security System in White, model no. VMS4430-100NAS, for $599.99 with free shipping. That's $50 off and tied with our January mention as the lowest total price we could find. The cameras feature weatherproof wire-free construction, a viewing angle up to 130°, 8x digital zoom, infrared night vision up to 25 feet, motion detection, built-in microphone and speaker, and mountable design. The system features a base station with built-in siren, 802.11n wireless, remote access, cloud storage, and local backup storage.