Looks like a lot of value here, and congratulations to the author / editor for shipping! One niggle though: no audio format (and if there is I didn't see it).

Looks like a lot of value here, and congratulations to the author / editor for shipping! One niggle though: no audio format (and if there is I didn't see it). Anecdotally, I saw noticeable jump in sales to my eBook No Budget Budget: https://leanpub.com/nobudgetbudget https://leanpub.com/nobudgetbudget when I added an audio book with it. Some people either don't like to read or don't have the time. Something to consider.