Yup Shadow, Skipr John is right, cruising units are dollars, and lots of 'em, more than you'd imagine you'd need. BTW, boat units are $ spent on your boat. When I was a wee sailing lass, a boat unit = $100. Now inflation seems to have increased it to $1000. Sigh.
And Steve, yes, the moorings are still obscenely cheap
, A$50 per week, and for that you get the pile mooring
, free hot showers (!), use of the excellent laundry
access to the Stamford Plaza dinghy dock
and a great cruising community, all in the heart of the CBD, next to the Botanic Gardens. However lots of people have become aware of all these upsides and it is getting really hard to get a space as it is full of people who have lived aboard here for years, or locals storing their boats. We were lucky to get one after being anchored for a week (if you sweet-talk the Moorings person, she'll let you have a key to the shower/laundry, and being anchored is free!), that was a month ago, and nothing has come up since.
Look forward to seeing you if you make it up here!