The best pre-Black Friday deals on robot vacuums live as of Oct. 22:
Ecovacs Deebot Ozmo 920 Robot Vacuum and Mop — $329.99 (save $370)
Ecovacs Deebot N8+ Robot Vacuum and Mop with auto-empty station — $399.99 (save $200)
Samsung Jet Bot+ — $489.99 (save $310)
Make room, pastel appliances and 4K TVs: Robot vacuums...