I'm reading this series now, am on book #4 Cibola Burn. A well-written fantasy series. Though the author does stuff the narrative with a lot of social justice warrior stuff, he does it seamlessly (or nearly so). [I just now redacted a list of examples, remembering just in time that SJW's are, at present, almost ubiquitous in real online life.] Still, it's no worse than playing The Elder Scrolls Online, where the quests pull a lot of the same stuff. It's like getting hit with a pie in the face a couple times per hour. And The Expanse is, nevertheless, a good SF tale.
A Time of Dread (Of Blood & Bone)
by John Gwynne is already marked down to $2.99 today after being released only five months ago. Maybe it will be good enough for me to go back and pick up the original series at the third book.
Promise of Blood (Powder Mage series Book 1)
by Brian McClellan is $2.99, as is The Crimson Campaign and The Autumn Republic as mentioned above. The entire trilogy at this price is a great deal on a great story. Link:http://a.co/0kgacI5
Annihilation: A Novel (The Southern Reach Trilogy Book 1)
by Jeff VanderMeer is $3.99 today on Amazon US. Sneaky had positive things to say about it and I've been watching for it because of that. Link:http://a.co/0coAl5x