This is something I've been waiting to see happen: Chuck Klosterman's publisher is making the author's essays available for separate purchase as e-books:

Individual essays by Klosterman are priced at 99 cents each, just as individual songs once were on iTunes...The essay collections are already available as ebooks, but now Scribner has also parceled them out and repackaged them by theme. Typically, essay collections wind up being chronological, but these sets — 10 to 14 essays for $7.99 — are grouped by topic. There is "Chuck Klosterman on Sports," "Chuck Klosterman on Media and Culture," "Chuck Klosterman on Rock" and so on.

There is no reason why e-book publishers can't repackage short stories and essays in a bunch of different prices and formats. I hope this experiment works.