I agree that the initial response would be something like that, but it is the long-term behavior that I would be interested in.. Do people rationally value their time? Probably not. But I will bet you that some people would be willing to shop in the premium isles.

An automatic kiosk is a way to get around this, except you do extra work instead of paying more. But that misses the whole point of this - it isn't a solution to the lineup problem, it is a social experiment. You could potentially find out how much people value their time, in dollars and cents.

Thanks for the book recommendation.