Had a look myself, low print runs from a bespoke publisher, it does look like a nicely produced book too. I reckon you'll have to just keep looking mate and hope you strike it lucky.
Think I may have just struck gold. Every single outlet I tried said they had no copies and it was long out of print. This was till I was researching more about the book and found out that the Gippsland Art Gallery had an exhibit based around the book which ended last year. So in the aim of leaving no stone unturned I shot them off an email asking if they might still have a display copy or something left over and it turns out that they actually do and are willing to sell it to me for the RRP + postage.
Huzzah.