There's a hardcover put out in the Premiere Classics line that has the same stuff that the trade paperback does, I believe. But the 10th Anniversary OHC is bigger in size and in page count. The paperback / PC hardcover has ten pages of extras. The 10th Anniversary has 200 pages of extras.
Now, I don't know what the $150 Platinum Edition hardcover has, but at that price, it's going to have to have ten times as much new content for me buy it.