Pricing strategies for self-published audiobooks

I’m preparing to self-publish my first audiobook (a 9-hour business book) and struggling with pricing strategy. There seems to be conflicting advice everywhere.

* Should I price based on length? If so, what’s the current $ per hour standard?

1. Is it better to price lower initially to gain reviews and rankings?
   
2. How do Audible credit economics affect optimal pricing?
   
3. Should non-exclusive pricing (Apple, Google, etc.) differ from Audible pricing?
   
4. Any pricing differences for fiction vs. non-fiction?

If you’ve experimented with different price points, I’d love to hear what you’ve discovered about the sweet spot for maximizing revenue (not just units sold).