I don't need to tell you that he didn't sell too many, since people didn't know what a hell is he selling them for. At the end it was more like a education about bitcoin because many people were quite interested to hear.
Education is important but it sounds like that was the wrong time and location. Sales need to happen quick and easy at an event like that. Education will create long lines and angry customers at a Fair
I think the selling was only the cover up for the education event. There is no way he thought he might sell many of them. Probably only some friends bought.
Anyway, i like when people try to spread the love.