As of July 3, the iRobot Roomba Plus 405 is on sale for $399.99. This deal saves you $400 on list price, and is the lowest-ever price according to camelcamelcamel. Our robot vacuum expert has hand-picked this deal as one of the best ahead of Prime Day.

This is one of the best iRobot vacuums you can get. With its $799 price tag, it's prohibitively expensive. However, with this early Prime Day deal, you can save 50% off the regular price, leaving you with a high-end vacuum and mop for just $399.

Don’t stress anymore when you get home about having to mop and vacuum. You should enjoy a clean home when you get back from a long day of work, a nd the iRobot Roomba combination mop and vacuum can make that happen for just $400—a 50% discount for Amazon Prime members.