Amazon and Google Play Store have the Kindle/eBook version of Leviathan Wakes by James Corey on sale for $2.99.

Kindle Sci-Fi Book: The Expanse – Leviathan Wakes Book 1 – $2.99 – Amazon.com and Google Play
This is currently my favorite Sci-Fi series.
The first book in the landmark Expanse series, now a major television series.
Leviathan Wakes is James S. A. Corey’s first novel in the epic, New York Times bestselling series the Expanse, a modern masterwork of science fiction where humanity has colonized the solar system.
https://play.google.com/store/boo…C&hl=en_US