DC  Graphic Novels Set of 3 : Batman Vs. Superman /  Trinity  / Superman: The Final Days 

A Brand New Set of Three (3) Graphic Novels. Purchased directly from the retailer. 

The set includes:

1) Trinity by Matt Wagner 

"Originally published in single magazine form in Batman/Superman/Wonder Woman: Trinity #1-3". 
Collects the full three-part mini series with an introduction by author Brad Meltzer. 

Billionaire eco-terrorist's Ra's al Ghul is on a mad quest to remake the world in his own image. With the juggernaut clone of Superman known as Bizarro and a deadly rogue Amazon by his side, this troika of terror casts an ominous shadow over the very future of mankind! 

 Witness the birth of a legendary alliance, as Batman, Superman and Wonder Woman join forces to defend Earth against an apocalyptic fate!  

2) Superman : The Final Days of Superman by Peter J. Tomasi

It's a new chapter in the Man of Steel's life that will change everything you know in the epic eight-part SUPERMAN- THE FINAL DAYS OF SUPERMAN, all written by Peter J. Tomasi (BATMAN AND ROBIN)!

Superman... is dying. His never-ending battles have finally taken their toll on Kal-El, and with time short he reaches out to unite his friends and loved ones for what comes next. Meanwhile, a new sinister force's machinations will see to it that Man of Steel will not go quietly into the night, but instead enter into a life and death struggle with another being forged from the very energies of the Kryptonian's solar flare power now claiming to be the true Superman!

SUPERMAN- THE FINAL DAYS OF SUPERMAN ushers in a completely new era for the Man of Steel in an unforgettable graphic novel that is NOT to be missed. Collects SUPERMAN #51-52, BATMAN/SUPERMAN #31-32, SUPERMAN/WONDER WOMAN #28-29, and ACTION COMICS #51-52.

3) Batman VS. Superman : The Greatest Battles 

The Dark Knight takes on the Man of Steel!  

Superman and Batman are usually allies, but when they do have to go toe-to-toe, it’s the ultimate battle of brains versus brawn! Can an ordinary man take down an opponent with the power of a god? Can even superpowers prevail against a tactical genius who is never less than ten steps ahead?

From all-star comic talents Frank Miller, Geoff Johns, Jim Lee, Jeph Loeb, Scott Snyder, Greg Capullo and more, these stories tackle the oldest fan debate in comics: Who would win: Superman or Batman?

Collects :
- "The Dark Knight Falls: Batman: The Dark Knight #4 (1986)
- "The Battle"  Batman #612 (2003) 
-  "Who Would Win" Superman/Batman #78 (2011) 
- "Justice League Part 2"  Justice League #2 (2011) 
- "Batman : Endgame"  Batman #35-36 (2014) 
- "One Night In Gotham City" Man of Steel #3 (1986)