Warehouse automation is a completely different ballgame to consumer, though.
If an Amazon warehouse can replace a $20,000/year human with a Kiva robot, they're happy to pay $10,000 for it. Consumers, on the other hand, would find $500 on the steep side for a robot vacuum, considering they'll also need a regular vacuum to cover the stairs and so on.
Consumers' price sensitivity is why Roomba spent years with a plastic product navigating at random by bumping into things and relying more on a brush than a vacuum.
I once attended a Foxconn seminar presented by Jay Lee where the topic was "dark warehouses"; certainly wouldn't be surprised if Amazon has a strong desire to reach that level of machine autonomy in their own warehouses.
