totally. I basically do blog + stripe, selling 1.5k copies with an ASP of $90, and I keep 97% of it. it was a pretty productive use of 2 months (altho i do spend about 2-3 hours a week continuing to market it and to serve the book community)
would have loved to use leanpub but it had issues, as already reported to leanpub support :)
We treat all author support issues to hello@leanpub.com as confidential, of course. For author support issues which are fine to discuss in public, you can see our author forum at https://community.leanpub.com/c/authors ... If you look there, you can see a representative sample of the issues people have had recently. (I don't want to turn this HN thread into a Leanpub author support forum thread, of course! However, our authors typically seem pretty happy with our service...)
i dont wanna air their dirty laundry but go try them out and if you like them then great. they certainly seem to work for most people. they struggled greatly with my 500 page book and after about 6 hours of wrestling with it i just gave up.
would have loved to use leanpub but it had issues, as already reported to leanpub support :)