This Zmodo 720p HD Outdoor Home Wireless Security Surveillance Video Camera System drops from $50 to $31.99 at Walmart.com. It ships for free when you spend $35, but otherwise, you can choose in-store pickup to avoid the $5.99 shipping charge. This is the best price we found by at least $7. It features quick and easy setup, and it delivers 720p HD video with night vision. It has motion-detection capabilities and the ability to send you notifications. It also has a weatherproof camera housing, so you can use it indoors or outdoors. Sales tax is charged in most states.