Ebay offers 3rd-Gen. Blink Outdoor 1-Camera Security System for $42.21 (reg $99.99) with free shipping.

Product Description:
See what’s happening at home no matter where you are with the Blink app using HD live view and infrared night vision. Two-way audio lets you hear and talk back – it’s like being home even when you’re not. With Blink's proprietary chip technology, Outdoor runs on two AA lithium batteries that last up to two years so you can see what’s happening in and around your home without the stress of frequent battery replacement.

• Dimensions (Overall): 2.8 Inches (H) x 2.8 Inches (W) x 1.2 Inches (D)
• Weight: .2 Pounds
• Features: 2-Way Talk, Night Vision, Cloud Storage, Controlled by Smartphone App, Cell Phone Alert, Motion Activated
• Indoor/Outdoor: Outdoor
• Assembly Details: Adult Assembly Required, Tools Not Provided
• Model #: BSM00300U
• Number of Cameras: 1
• Mount Type: Screw Fittings
• Operating System Compatibility: Apple iOS, Android
• Maximum Resolution: 1920 x 1280
• Connection Types: No Wired Connection Ports
• Image Sensor Type: CMOS Sensor
• Wireless Technology: Wi-Fi
• Compatible With: Amazon Alexa
• Night Vision Range: 20 Feet
• Focal Length: 1.75mm
• Minimum Operating Temperature Fahrenheit: -4
• Maximum Operating Temperature Fahrenheit: 113
• Motion Detection Angle: 110 Degrees
• Power Source: Battery
• Battery: 1 Non-Universal Lithium Ion, Required, Included