It's going to be a small market. 2007 is now 17 years old. Some younger people haven't even seen the movie. I kept promising to make a replica with moving hands, and never got further than the planning stage. This one definitely looks 3D printed, which I believe that's what you said. If a 3D scan could be made of it, you might sell the scan to interested parties. Brass castings, if they preserved the detail would also be an option.
Yes, I see the castle was an insert.