Dead Rising strategy guide from Brady is out-of-print. I've checked both Barnes & Noble and Borders. They will special order for you for around $32-40.
Luckily, I spotted a copy today at Game Crazy, San Jose, CA. [Blossom Hill x Almaden] They're selling it for cover price, front cover and back cover a bit creased; otherwise interior is fine. Top of the magazine rack if you want it.