"I'm not sure how you would have a beta version of a fiction book. That would be like selling jumbled ideas."
I know what you mean, though I'd like to point out that there is a serious and successful historical precedent for the publication of unfinished fiction: serial publishing (the way big novels used to be published, cf. Dostoyevsky, Tolstoy, Dickens, et al). Novelists would publish chapter-by-chapter, before finishing the whole thing, and would even change their plans for their novels in response to feedback from the public.
Now, of course for novels published serially, people do expect that at least each published chapter is finished when it is published, and is not a draft subject to change. However, as a former academic type, I find reading early drafts to be fascinating and meaningful; watching the jumble untangle is an exciting process. I've spent a lot of time reading early drafts of poems, and comparing how different versions of the same work are published by the author over time.
I know what you mean, though I'd like to point out that there is a serious and successful historical precedent for the publication of unfinished fiction: serial publishing (the way big novels used to be published, cf. Dostoyevsky, Tolstoy, Dickens, et al). Novelists would publish chapter-by-chapter, before finishing the whole thing, and would even change their plans for their novels in response to feedback from the public.
Now, of course for novels published serially, people do expect that at least each published chapter is finished when it is published, and is not a draft subject to change. However, as a former academic type, I find reading early drafts to be fascinating and meaningful; watching the jumble untangle is an exciting process. I've spent a lot of time reading early drafts of poems, and comparing how different versions of the same work are published by the author over time.
(btw I work at Leanpub)