eBay has the Zmodo 8-Ch. 1TB POE NVR Surveillance System (ZM-SS78D9D8-S-1TB) for $180 with free shipping. Features eight IP65 weatherproof 720p cameras, night vision with up to a 65-foot range, 1TB hard drive, HDMI, and app viewing for iOS and Android.
eBay has the Polaroid Cube HD 1080p Lifestyle Action Video Camera (Black) for $45 with free shipping. Retail price: $100. Has excellent Amazon Reviews.
Amazon has the Best Vision SK-DVR-DIY-16 16-Channel D1 DVR Security System + 8 800TVL IR Outdoor Weatherproof Bullet Cameras for $250 with free shipping. List price: $500. Includes a 1TB HDD and 8 IR night vision camera with motion detection.
Has excellent Amazon Reviews.
eBay has the RC 6-Axis Quadcopter Flying Drone Toy With Gyro and HD Camera Remote LED Lights (SKY1809) for $35 with free shipping. Retail price: $120. Comes with a built-in 6 axis gyroscope for steady hovering, and its four axis control allows it to be more flexible and rapid when flying.