Sydney is the seventeenth most departed-from cruise terminal, departure point of over one hundred and ninety sailings per year from Carnival, Princess, Royal Caribbean and more to the South Pacific, along with other places.
Overall sailings from Sydney are fairly affordable compared to other ports. Cruises leaving from Sydney during the the peak season of winter are considerably more expensive than the low seasons of spring and summer. Check the graph below for the average cost per day by month.