4th edition already? They can't be serious.
I might buy the three core books, if nothing else, just so I can familiarize myself if I ever have to play in a friend's campaign if he uses it, but no way am I buying a whole new set of books after I've spent the past 6 or 7 years collecting a rather ridiculous amount of 3rd and 3.5 books at 15-30 dollars a pop