Perth is the fifth most popular cruise terminal in the South Pacific, as the embarkation point of only one sailings yearly from Cunard and Royal Caribbean to the South Pacific, along with other places.
On average Perth is rather expensive compared to other ports. Sailings departing from Perth during the the peak season of winter are significantly more expensive than the the low season of spring. The graph below shows the monthly average cost per day for cruises from Perth (Cruises only depart from Perth between March and December).