I’m not sure launching an audiobook special on the same day the new Dune movie releases is the best timing, but there you have it. In a great deal from Chirpbooks, Sunborn in audiobook is just $1.99 for a limited time! (Normally it’s $14.99 at Chirp, which is already way less than the price at Audible.) Grab it while you can! It’s a book I’m especially proud of, with a wonderful narration by Stefan Rudnicki.
Neptune Crossing is also deeply discounted. The rest of the Chaos series is supposed to be marked down, but I haven’t seen the prices drop yet, so check back. I may need to shake a few branches.
Edit: They came through for me! All the volumes of The Chaos Chronicles are marked way down. There will never be a more economical way to stock up on the whole series!