I don't think it'll be signed by Stephen King. And I also don't think there will be an stampede for this item. I went to the SDCC in 2012 and the attendance is more focused on TV shows than comic books. And for book the public is even less. Of course the 150 will disappear but I don't think the demand inside the con will be as high as if it'd be put for sale at scribner.com.