Overstock.com offers the Ring WiFi Enabled Video Doorbell in Satin Nickel, model no. 88RG000FC100, for $165.99 with free shipping. That's the lowest total price we could find by $13. (We last saw it in July for $178, bundled with a Lyrix speaker.) The weather-resistant doorbell chimes on all your connected devices, including smartphones, when you have a visitor, allowing you to answer your door from anywhere. Features include a 720p camera with night vision, motion detection, Li-ion rechargeable battery, and up to a year of run-time between charging. Deal ends March 27.