Gettysburg Collector's Show

I was speaking with one of the owners of Owens & Ramsey Historical Booksellers (an excellent bookstore, by the way) in Richmond yesterday when he mentioned the big collector's show up in Gettysburg this weekend. A brief check of the web shows it to be an annual event and a pretty big deal. Has anyone out there been to it, and if so, is it worth spending valuable battlefield stomping time on?