Woot is one of the best known deal of the day sites. Their rarely have coupon codes but do offer promotions such as $5 flat rate shipping for an entire month. They have run coupon codes through voucher sites such as Groupon or Amazon Local.
Woot! has the Alexa enabled iRobot Roomba 671 Robot Vacuum for a low $219.99. Free Shipping for Amazon Prime members, otherwise $6 shipping. This is $75 off the current Amazon price and a fantastic price for newer Roomba with App control. We rarely see any Roomba below this price point.
Good for Pet Hair, Carpets, and Hard Floors
Works with Alexa for voice control (Alexa device sold separately)
Clean and schedule from anywhere with the iRobot HOME App; compatible with Amazon Alexa and the Google Assistant
Patented 3-Stage Cleaning System and Dual Multi-Surface Brushes pick up everything from small particles to large debris
Full suite of intelligent sensors guide the robot under and around furniture to help thoroughly clean your floors
Auto-Adjust Cleaning Head automatically adapts its height to effectively clean carpets and hard floors
Runs for up to 90 minutes before automatically docking and recharging