I love looking at people's bookshelves and see what they've got. So today, I did a search for Absolute Sandman on Flickr. All pictures shown in this entry are from Flickr and will link back to their respective owners.
Absolute Sandman is actually a 4-volume hardcover compilation of all the Sandman issues. It comes with a slipcase. You can read more about Sandman and its history on Wikipedia.
Notice how the Absolute editions have more colours added on.
Oh, and notice the size difference too.
I haven't got a chance to read any Sandman yet, but I shall find a way to get them.
Here are some Amazon links if you want to find out more on the books. The reviews on are overwhelmingly positive.