Sam's Club offers its members the LaView 6-Camera 8-Channel 4K NVR IP Ultra HD Security System for $749 with free shipping. (Non-members must pay an extra $74.90, so it's better to get a 1-year membership for $45.) That's $300 off and the best price we could find. It features a 2688x1520 (1520p) native resolution, four 4-megapixel bullet cameras, two 4-megapixel dome cameras, 2TB hard drive, and night vision to 100 feet.