I haven't earned a 100k yet with Audible, but I have found a way to earn money with little work on my part. Here is how I did it. I hired a ghostwriter to write a 20,000-word document on Keto and then found a narrator on Aubile who converted the ebook into an audiobook. I have sold almost 1,500 audiobooks so far and I am not even promoting the book. The only cost I had was for the ghostwriter - a little more than $400. The narrator and I share royalties so I didn't have to pay for her out of my pocket. The key is to find a topic that is high in demand!
I hope this helps someone today.
God bless you,
Mark
Isaiah 40:31