[eBook] Humble RPG Book Bundle: Star Trek Adventures - $1.42/$11.50/$21.50

This latest bundle is for the tabletop role playing game, Star Trek Adventures.
I won't list what's included at every tier but the core rulebook is in the middle tier of $11.50. The lowest tier does include a starter set with basic rules and an adventure if you just want to try things out.
The books are all in PDF format but there's also a 50% off coupon for a hardcover copy of the core rulebook if you like the feel of traditional paper.

From the site description:

We've teamed up with Modiphius for our newest bundle! Get roleplaying games and ebooks like Star Trek Adventures: Starter Set, Star Trek Adventures: Core book, Star Trek Adventures: Alpha Quadrant Supplement, Star Trek Adventures: Deep Space Nine characters, Star Trek Adventures: Next Gen Characters and beam up with the Star Trek Online Original DS9 Uniform and Elite Services Starter Pack which includes Inventory Slots, Bridge Officer Slots, and more!
Get the 368-page hardcover of Star Trek Adventures: Core Rulebook for 50% off the cover price, a savings of $30 when you pay $8 or more! Plus, your purchase will support NAACP Legal Defense Fund.