Welcome to the forum Colin!
Regarding your sword, giving the name a quick Google didn't bring up much information. I did find a craigslist add for one, but it was unfortunately e xp ired, and Google didn't cache the page. I would estimate that the sword would probably be worth as much as you paid for it, or sadly less. You don't usually see these types of display swords grow in price to much, unless their a licensed replica from the movies, or belong to a line with a huge fan base (Kit Rae, Gil Hibbin). That's just my guess though, and I'm no one special, so I could very well be wrong. I'd be interested in seeing some pictures of it, and of what other items you have in your collection.
Re: Dark Knight Fantasy Sword?
2Do you have the maniacs, or the schizophrenics, or the astrophysicists in your family?