For a real world example I'd look at Arvid Kahl's post, it's more specific and contains actual numbers: https://thebootstrappedfounder.com/how-i-self-published-

For a real world example I'd look at Arvid Kahl's post, it's more specific and contains actual numbers: https://thebootstrappedfounder.com/how-i-self-published-zero-to-sold-a-bestselling-book-on-bootstrapping/#The_Revenue https://thebootstrappedfounder.com/how-i-self-published-zero...