Will the product number or ISBN be different? I ask this because I purchase my RPG books from Hastings (national video rental store) and the sales clerks tend to be highschool/college students and I need to make sure that order the right version and I get the right version. The obvious answer is to mail order it from Mongoose but I am under a "no more book for a while" order from the wife (with good reason) and I going to save up spare money till it is released and pay in cash. I was just wondering what is the best way to get the correct book when it reasled? Also a quite note how will I tell by looking at the book to check, I currently do not have a copy.