You&#x27;re correct that we&#x27;re more expensive per transaction than Gumroad, which is an excellent service. Now, for some books, the amount earned above the minimum price is more than enough to make up the difference: our price sliders work really well to earn extra money for authors. The Leanpub vs. Gumroad question is actually a really interesting one; there are other considerations on both sides. (Gumroad is what I recommend for authors who don&#x27;t find Leanpub a good fit. I know that authors like Nathan Barry make a killing using their own sites for the marketing and Gumroad for the selling.)<p>You&#x27;re also correct that one of the main points of Leanpub is the one-click &quot;make all the formats and sell them&quot; approach. We do offer PDF upload for authors who find Leanpub&#x27;s workflow preferable to more DIY sites like Gumroad.<p>Specifically, in terms of LaTeX support: we do support LaTeX math, but you&#x27;re correct that there are some limitations. I&#x27;m not sure if the work we&#x27;re doing on Markua (<a href="https:&#x2F;&#x2F;leanpub.com&#x2F;markua" rel="nofollow">https:&#x2F;&#x2F;leanpub.com&#x2F;markua</a>) will help with this or not. I think that it will help with some of it (making equations into figures and referencing them from other places), but not others (probably the alignment isn&#x27;t good enough). I&#x27;d really appreciate it if you could contact me with specifics if you want...