I really think it's genius to discount eBooks like publishers have been doing, even if it's not the first in a series. Do you realize how many more books I buy now that I'll never have the chance to read, but yet I keep buying them...because it's so cheap! It may not be best for the authors, but the publishers have got to be seeing some nice rewards.
Beggars in Spain by Nancy Kress [$0.99] - The original novella won the Hugo and Nebula Awards and this novel was nominated for both.
Heart-Shaped Box by Joe Hill [$1.99]
The Whitefire Crossing (Shattered Sigil #1) by Courtney Schafer [FREE] - I absolutely loved this book last year. (review)
Dawn of War (Blood War Trilogy #1) by Tim Marquitz [FREE]
The Black Prism (Lightbringer #1) by Brent Weeks [$1.99]
The Killing Moon (Dreamblood #1) by N.K. Jemisin [$1.99]
Leviathan Wakes (Expanse #1) by James S.A. Corey (with The Dragon's Path by Daniel Abraham included) [$1.99]
Feed (Newsflesh #1) by Mira Grant [$1.99]