BigDeals via eBay offers the refurbished Astak Wired Security Camera, model no. CM-818W, for $14.99 with free shipping. That's tied with last month's mention and $8 under the lowest total price we could find for a new unit today. It features 12 infra-red LEDs, weatherproof casing, built-in microphone, and a 100-foot video cable.
Of note, no warranty information is provided.