It depends. Certain GI Joe comics featuring special storylines, limited print runs, or signed by the creators can be worth a lot. But common issues might not have much value.
It depends. Certain issues from the 1980s of GI Joe comics, in good condition and with special features, can be valuable. But not all are. Condition, popularity of the characters, and scarcity play a role.
You can usually check the indicia on the inside of the comic. It might have specific markings or print information indicating it's the second printing.
Some online forums dedicated to comics might have suggestions on where to find GI Joe comics. Also, Amazon Kindle has a selection of digital comics that could include what you're looking for.
No, typically GI Joe doesn't have backwards thumbnail in the comics. The character designs are usually consistent and don't feature such an oddity. Maybe you're confusing it with something else?
The filming locations for the story of GI Joe vary. It could be in multiple places depending on the specific production and requirements of the project.
Another great one is 'GI Joe: Special Missions'. This series offers unique story arcs that focus on different aspects of the GI Joe team's operations. It has a mix of action, drama, and a touch of humor. The character development in this graphic novel is top - notch, making it a must - read for any GI Joe fan.