If you check the official Web site of The Danny Elfman & Tim Burton 25th Anniversary Music Box, you'll notice that less than 100 copies of these $500-plus, mammoth box sets remain. That's not bad at all, for a box set of that price. So why, then, can you order the set on Amazon and Best Buy? Perhaps we're getting a bit ahead of ourselves here. When the box set was announced back in September, the big unanswered question (as always) was whether the limited, numbered run was the only