Walmart offers the Arlo Pro 2-Camera Security System bundled with an Arlo Outdoor Mount in White for $239 with free shipping. That's tied with our mention from three weeks ago and $70 under the lowest price we could find for these items purchased separately elsewhere. The system includes two cameras that feature:
weatherproof wireless camera with 1280x720 video capture resolution
130° viewing angle
night vision up to 25 feet via 850 infrared LEDs
The base station features a 100-decibel siren, support for live monitoring, Ethernet, and USB.
You very likely are putting your laptop battery into an early grave.