https://electronics.woot.com/offers/2-cam-system-blink-outdoor-4-security-camera 2-Pack Blink Outdoor 4 Security Camera (4th Gen) w/ Sync Module 2 (Refurbished) for $42.99. Shipping is free for Amazon Prime Members (must login with your Amazon account and select a shipping address in order for Woot! to apply free shipping) or is otherwise $6 per order.