Guys just trust me and go buy a Xiaomi Mi Robot Vacuum for around 280 shipped off Alibaba and enjoy it. It's by far the best robot vacuum for the money. It has features robot vacuums that cost 3x as much don't.
confedSeems like massdrop has a trend with skimping on details on the robovacs and offering them for the same price as major retailers. Just go buy it on Amazon for the same price.