Yeah it appears there's two different versions--one for UA 1 which is the book that sold today and this one would have a different book from UA 2. Both Dell'Otto I believe
Yes, they're 2 different books. It only sold for $20.50 and enough Dell'otto collectors knew about it so maybe the prices for UA1 were manipulated
One is for Ultimate Alliance and the link is for Ultimate Alliance 2. 2 appears to be the guide that would come with a game. The original was not inserted in the game, it was a promo which had:
Abridged reprinting of Secret War (2004) issues 1-5, plus three pages character game specs for Spider-Man, Captain America, & Thing