Originally posted by: avatar!
Hard to tell, but unlikely to be honest. My experience with kickstarter is that most games (not all) now are so easy to get on most systems, that they are not "valuable". Then again, depending on the art book it may quite valuable. Which is to say, the art book might be valuable depending on how readily it is available.
You can buy an art book on fan gamer. I have one, assuming it's the same one.
I think you're a bit late to the party OP. While I'm sure this is harder to find than the new CE coming out soon, I doubt people will care that much. Had you attempted to sell this before that was announced, you'd have probably done better, as this would've been the only official physical copy. Especially since the new CE has more to it. I don't know for sure, there is a large fanbase for this game, but I don't see why anyone would want this more than the new one.
Sounds like you opened it too. I would've considered making an offer if it was sealed