1. Camb Guide Aus Eng Usage 2Ed Hb
by Vv.Aa. 
Price: USD 1215.61
Dealer: Abebooks, Iridium_Books
Description: ISBN10: 0521878217, ISBN13: 9780521878210, [publisher: CAMBRIDGE] [DH, SE, Spain]  

2. The Cambridge Guide to Australian English Usage
by Peters, Pam 
Price: USD 170.41
Dealer: Alibris, Bonita via Alibris
Description: Cambridge University Press 2007 2nd ed. hardcover Good Access codes and supplements are not guaranteed with used items. May be an ex-library book.