Introducing Kindle Vella
Amazon has officially launched Kindle Vella, its new mobile-first, interactive reading tool for serialized stories, which was first announced in April. The company said that the program is starting with "thousands of stories containing tens of thousands of episodes."
Through the new KDP self-publishing service, authors can publish episodes containing between 600 and 5,000 words one at a time. The first three episodes of each story are free, but to read subsequent episodes, readers will need to buy tokens, which are available for purchase in bundles in the Kindle iOS app or on Amazon.com. Authors receive 50% of the token price. Bundle prices start at $1.99 for 200 tokens, which would unlock at least 4 episodes, depending on episode length as per their site.