Amazon has the 4-Pack eufy Security S220 SoloCam Wireless WiFI Solar Outdoor Camera on sale for $180 with free shipping. $45 per camera. The 2-pack is on sale for $100 with coupon, 1-pack for $50.

• Has infrared LEDs, f/1.6 aperture, and motion detect. Requires 3 hours of solar charging a day.
• No monthly fees, HomeBase 3 compatible, requires 2.4 GHz Wi-Fi