That guy is hilarious. If it wasn't him it was a guy with the same sales pitch that came to my house a couple weeks ago. I swear this guy sounds just like the dude. Selling the same stuff and same actions/wording. It was worth buying a bottle just for the sales pitch.
Sure is a fast talker. Not sure about the salesman thing but yet no doubt he gets results but it is probably mostly because of his personality. For the amount he was selling, you'd have to have some gimmick as that seems super expensive stuff.