The thought I've heard floated before is that you might not be happy with your new vacuum you just bought. Some percentage of people that buy anything will not

The thought I've heard floated before is that you might not be happy with your new vacuum you just bought. Some percentage of people that buy anything will not be pleased with the result and that new ad in their face might be enough to push them over the edge to return it and buy what is advertised. Amazon just wants to ensure you buy the replacement from them.