Why your book needs an audio version?
Audiobooks is the fastest growing category in the entire publishing industry with annual sales of $1B and demand increasing by 30% each year. Your audiobook will likely outsell your ebooks and physical books.
An audiobook opens up you up to all the people that don't have the time or patience to sit down and read your book. Audiobooks people read on the go and fit your content into their busy lives.
Audiobooks typically sell for 2 or 3 times the price of traditional books. Bundle your audiobook and ebook together for an easy upsell. Many readers are happy to pay more for the convenience of having consumption options.