That actually would be very smart targeting - especially given Amazon actually asks you for a reason of return. So they could target people that said this vacuu

That actually would be very smart targeting - especially given Amazon actually asks you for a reason of return. So they could target people that said this vacuum doesn't work or they need a different model, etc. by offering them similar one but from other manufacturer, etc. But I don't think this happens, and it's require developing much more sophisticated models than dumb "bought together" ones they seem to be using now.