The buffet example is bad. You can't really go back in a buffet, so it's a gamble where the certain outcome those first things (which you can see). Furthermore it doesn't factor in the cost of having to walk more to get the later items.

My only take away from it is that people don't really have as strong a preference for buffet food as they might think. I'd also wager that avoiding "bad" food is much more important than finding particularly "good" food.