Home Depot offers the refurbished Nest Dropcam HD 720p Indoor WiFi Security Camera, model no. DCAM-001-THD, for $89.99 with free shipping. That's $119 under the lowest total price we could find for a new unit. It features 2-way audio, audio and motion detection with mobile alerts, night vision, remote access, and cloud video recording.
Note: No warranty information is provided.