The best Prime Day vacuum deals from iRobot, Dyson, Shark and others for October Big Deal Days

October Prime Day typically has deals on all kinds of electronics, but it's a smart move to look for big-ticket items on your list first and foremost. If you've been meaning to buy a robot vacuum, now's a great time to do so. These are some of the more expensive smart home gadgets you can get, but snagging them on discount during October Prime Day can mean saving hundreds off the sticker price. This year, Prime Day deals have brought some of our top picks for the best robot vacuums down to record-low prices, and there are even some decent deals on cordless stick vacuums as well. Here are the best October Prime Day vacuum cleaner deals we could find.