Lets back up a sec. First off, I'm talking about the release of the movie, not the oft talked about "JJP #2". So I'm talking near term,and I speculate that it might increase value (maybe even to $10K in the 13 days between the release and Christmas! ). There may be quite a few soon to be noob pinheads that will see the movie and then realize that LOTR is one of the best games of all time.
As to a Hobbit pin, I do not think you're making an apt comparison. Any Hobbit pinball would be state of the art...not some mediocre SS (Star Trek), or roundly criticized IJ4. Even though Ill bet alot of Trekkies or IJ fans do have both machines. Pinbot and BOP? That's a massive stretch.
Even NON Tolkien fans might want both, because of gameplay, resale value, and the fact that if The Hobbit is a rockin' pin, it might be cool to own both. Especially for the many hobbiests for which money doesn't seem to be much of a concern.