Costco Wholesale.com has for their Members: Arlo Pro Smart Home HD w/ 3-Pack of IP Security Cameras on sale for $449.99. Shipping is free.
Note, offer is valid through 10/1/17. While supplies last.
Available for Costco Members only and must log-in to see the price.
Arlo Pro Smart HD Base Station w/ Built-In Siren
3x Arlo Wire Free HD Magnetic Camera w/ Audio
4x Rechargeable Batteries