OMG, flash backs to about 4 years ago.
I am fairly certain I had the exact same dude, based on your post. Somehow, my wife got sucked into letting him into our house. Did he also bring his own little container of "dirt", and show you how well it sucks it back up? And the cyclonic action?
I just about fell off the chair and shat myself when he told me the special price. And the financing deal.
Talk about hard, high pressure sales though. And then
the scare mongering about "how can you let your children play on this dirty carpet". He wasn't in my house long after that.
My "Ginsu knives" were cheap Chinese rip-offs, and couldn't cut a ripe tomato after two weeks of use.