Not a lawyer . . . creating fan content is protected by fair use, at least to my understanding.That's not how copyright works. It isn't price-dependent.
I can write a Superman novel and share it with the world . . . but without a license from DC Comics, I can't charge for it, I have to release it for free as fan fiction.
Of course, various IP holders have gone after fan fiction at various times. Or fan game design. TSR earned the moniker "They Sue Regularly" for that behavior. And because corporations that control our favorite IPs have big legal teams, it's usually better to pull your fan-fiction Superman novel down rather than fight it in court.
Every company is different, but it feels like these days most IP holders have realized that trying to squash fan fiction / game design is not a good look and not worth their time. Trying to shut down fan fiction is like playing whack-a-mole, and the company looks like a bully picking on fans, and fan fiction is fans engaging with the property and can actually lead to the property having higher visibility, higher engagement, and ultimately more folks purchasing the "official" stuff.
I don't think I'm wrong here on fan fiction being illegal . . . but even if I am, I don't think the OP has much to worry about.
On the other hand, the use of AI, even in a fan project, turns me cold, so I won't be engaging with this particular project.








