Probably next to nothing, but hell - we're already here.
Those who are already familiar with Dream, Lucien, Merv Pumpkinhead, The Corinthian and company will view this book as a homecoming. Those who are not familiar with the world of The Sandman will find a warm welcome waiting for them. The book is easily accessible to new readers, being set - as it is - before the start of the original series. So if you have yet to read the original Sandman, worry not - this is a good place to jump-in.
Unsurprisingly, the artwork is stunningly beautiful. One can barely believe that this is Gaiman and Williams' first collaboration together as they get along like a house on fire. Colorist Dave Stewart and Letterer Todd Klein - equally responsible for much of the artistic look of the original Sandman - lend their expertise as toward the proceedings as well. The final result is breath-taking.
Bottom Line: If you are a reader of comics, a lover of art and above all else a dreamer, you should be reading this book.