http://www.ebgames.com/ebx/product/241303.asp
EBGames has the official Halo 2 Strategy Guide for 13.59, which is already below the $16.99 retail. On top if this, EBGames has a 20% off coupon code for guides: HB20
I dont usually buy guides, but this one is NICE. I saw it in my local Gamerush...