LightInTheBox offers the Szsinocam 4-Channel Security System with Four Cameras for $139.49. Coupon code "SAFELITB1" drops that to $85.99. With free shipping, that's $144 off and the lowest price we could find. It features H.264 video compression, motion detection, night vision, and remote access. (A hard drive is not included.)Note: Uncheck "Add Shipping Insurance to your order" during checkout to remove the $2.99 fee.