Woot has the Refurbished Ring 1080P Wired Video Doorbell in black for $19.99 (regularly $59.99 when new but currently $38.99 on Amazon) with Free Shipping for a limited time. It comes with a 90 Day Woot Limited Warranty.
Ring offers a motion-activated camera, two-way audio, and brilliant 1080P HD video, so you’ll never miss a visitor again. See, hear and speak to anyone at your door in real-time from your smartphone, tablet, or desktop. Day or night, rain or shine—you’re always home. It works with Alexa to launch a real-time video with your voice. This is their new entry-level low-cost model and it offers a lot of bang for the buck. It offers a 155° horizontal field of view with motion detection with custom zones but requires it to be hardwired.