it's a rare find that usually goes for between $100 and $150.
It's a black and white version of the comic (so i own the original color also because the color is just so beautiful) that is oversized, leather bound, and comes in a molded hard plastic case with all the alex ross sketches, pictures of merchandise and promotional media, footnotes, a whole ton of other apocrypha, a massive beautifully done poster (made to look like a movie) and a fairly shitty two cd set that has some computer content which is also very mediocre, and a soundtrack (which is pretty bad, i ended up making my own mix anyways
If you're lucky (like i was) you can find them on Ebay occasionally going for like $50-$60.