Thumb Score: +7 Costco Wholesale [costco.com] has for Costco Members: iRobot Roomba i8+ Wi-Fi Connected Robot Vacuum with Automatic Dirt Disposal (i855020) on sale for $579.99 + Tax. Shipping is free. Manufacturer's savings is valid 11/23/20 through 12/24/20. While supplies last. Limit 2 per member.[list][*]For more product level details, refer to the Product Information Page [irobot.com] on iRobot website.