Fallout New Vegas promises to be a big game, and if it's anything like Fallout 3 it'll be a big game. I don't regret getting the hardback guide for Fallout 3 and this is the cheapest I've seen this listed. Expected publication is 22nd October, just in time for the game's release.
From the description:
Hardcover collector s edition!
Exclusive maps detailing the New Vegas world!
Complete coverage of every main mission adventure as well as all side quests and encounters.
Every collectible catalogued and located so you won t miss any.
Huge pull out poster map of the huge New Vegas landscape with points of interest, main sights, and major landmarks labelled.