I'm going to be moving all of my older previously published short stories to LetterPile.com soon, after some heavy editing. I feel LetterPile is a better platform for short stories than individual eBooks, and a free online website makes them more accessible. I have already moved a couple of my old stories that were originally published as eBooks, but I will be editing and moving the rest soon.
Besides, my old short stories, especially the stories I wrote before earning my Creative Writing degree, need a lot more editing and polishing. Stay tuned for the new versions of these stories, plus new stories.