iRobot’s Roomba Combo vacuum-and-mops are up to $300 off right now

The iRobot Roomba Combo j7+ is the top 2-in-1 pick in our guide to the best robot vacuums, as it adds a retractable mop for cleaning hard floors onto a powerful robovac for carpets and other surfaces. It’s expensive at its usual list price of $1,000…
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