Byliner and Atavist, two publishers that focus on e-singles (digital longform journalism), are experimenting with online subscriptions. While the programs are still in early stages, they could serve as models for other publishers who want to try the same thing. Byliner Plus
The San Francisco-based Byliner publishes fiction and nonfiction e-singles it calls “Byliner Originals,” from authors like Margaret Atwood, Amy Tan and Jon Krakauer. It sells them through ebook retailers like Kindle, Nook and Apple, usually for $1.99 or $2.99.