Dell Home offers the iRobot Roomba 890 WiFi Vacuuming Robot bundled with a $100 Dell Gift Card for $499.98 with free shipping. (The gift card will arrive via email 10 to 20 days after ship date; it expires after 90 days.) Assuming you use the gift card, that's the lowest price we could find by $40. It's compatible with Amazon Alexa and Google Assistant, as well as iOS and Android smart devices. Deal ends March 18.