How long are you prepared to wait for your favourite authors’ next book?

Do you want your favourite author to take as long as necessary to write their next blockbuster? Gabriel Garcia Marquez and Toni Morrison famously can take anywhere from 5 to 10 years to deliver a novel, and it tells in the beauty of the prose.

Or do you prefer your bestsellers delivered every few months – James Patterson and Wilbur Smith now use co-authors, so that they can churn out several books each year.

Most of us indies writing full length novels aim for one or two books a year, depending...