'Civil War' is also great. It shows the conflict among superheroes over the Superhuman Registration Act. It explores complex themes like freedom, responsibility, and loyalty. There are great character developments for many of the well - known Marvel heroes.
One popular one is 'The Infinity Gauntlet'. It's a classic that features Thanos and his quest for ultimate power with the Infinity Stones. The story is full of epic battles and high - stakes drama.
I think 'Spider-Man: Kraven's Last Hunt' is a good starting point. It offers a deep dive into Spider-Man's character and has some amazing art. It shows the darker side of the superhero world in a really interesting way.
The best ones tend to be very immersive. 'Thor: God of Thunder' makes you feel like you're in the world of Asgard. They also often deal with deep themes. 'Captain America: Winter Soldier' is not just about action but also about loyalty, friendship and the cost of war. And the art styles can be very diverse. Some, like 'Silver Surfer', have a very cosmic and dreamy art style that suits the space - faring nature of the story.
Definitely 'Secret Wars'. It brought together so many different characters from different parts of the Marvel universe in a battle for survival. It had a lot of fan - favorite characters interacting in new and exciting ways. 'X - Men: God Loves, Man Kills' is also quite popular. It tackled important themes like prejudice against mutants in a really engaging way.
One great one is 'The Dark Phoenix Saga'. It's a classic that really delves into the complex character of Jean Grey and the X - Men's struggle against her as the Dark Phoenix. It has amazing art and a very engaging story that has influenced a lot of subsequent Marvel stories.
One great fiction graphic novel in the Marvel books is 'The Infinity Gauntlet'. It has an epic story with Thanos collecting all the Infinity Stones and the heroes' desperate fight against him. The art is amazing, really bringing the cosmic battles to life.
Another good one is 'Hawkeye' by Matt Fraction. It shows Hawkeye's life outside of being an Avenger. It has a unique art style and a lot of humor, which makes it accessible for new readers.
One of the top places is Amazon. They have a huge marketplace for books, including graphic novels. With its vast customer base, your well - conditioned Marvel graphic novels are likely to find interested buyers quickly. Just make sure to accurately describe the condition and any special features of the books.