afdsolutions via eBay offers the Zmodo 720p Wireless Security Camera for $45 with free shipping. That's the lowest price we could find by $5 and tied with our December mention as the best deal we've seen. It features 350° pan and 85° tilt, motion alerts, and 2-way audio.

It has good reviews on over 300 verified purchases at Amazon; most complaints focus on the WiFi connection and frustrations with the associated app.