Walmart offers the refurbished Samsung 4-Channel 500GB DVR Security System, model no. SDS-P3042, for $199.99 with free shipping. That's the lowest total price we could find for a refurb by $15, although we saw one for $20 less in January. It includes a DVR system with built-in 500GB hard drive and four cameras with night vision, 72° wide angle coverage, and 720 TVL resolution.

No warranty information is provided.