I really don't know, but someone has put a lot of work into creating it. From what I can see of the photo's it looks well executed. Are they worth THAT much that it'd be worth doing it just as a money (& perhaps kudos) making exercise? I ask genuinely out of curiosity as I've no idea what they fetch, & the value of the finished article is usually the prime motivational factor in doing these things.......unless as Paul says, it was done as a one-off presentation piece.