Super Mario Galaxy Collector's Edition (Prima Official Game Guides) (Paperback), 256 pages, due out on 12 November 2007.
This looks like a mis-price, but may be worth a try.
It is 0.54 pence plus £2.75 post and packing, unless you add it to a £15 order to get free delivery.
When I ordered one, it says it will be dispatched soon, despite the 12 November relesase date!
Amazon have now added a £29.45 sourcing fee! Though, the guide mentioned in post 4 is still 55p without this stupid fee.