Movie tie in comic books or video games are known to be cash grabs with a flimsy premise and little thought put into them. I generally overlook them because of this and didn't really intend on picking up Django Unchained yet somehow found myself flipping through it. I've not seen the film so I went in blind but hoped that Quentin Tarantino's direct involvement would mean it was worth a read.
His introduction certainly settled some of my fears. This comic book is essentially the entire script, fully formed and almost separate from the movie. While the film evolves and changes during shooting (adding scenes or subtracting them depending on what works best), the comic is the full story as Tarantino originally envisioned it. That's pretty cool and certainly not the usual approach to cross media promotional products, which usually expand on extraneous details instead of forming a cohesive story.