The Local Organising Committee (LOC) for the World Cup say they will advise where tickets can be purchased and for how much.
According to www.fifa.com:
General Public sales (1 Nov – 3 Dec)
All Packages and individual ticket categories will be offered to the general public through this page on FIFA.com or the Outlets located across Port Moresby.
All Package and individual tickets are available on a first come, first serve basis.
From 1 – 3 November, the first 48 hours of this public sales period will be exclusively for Visa card holders via FIFA.com and Outlet/Eftpos sales.
All other cardholders can purchase starting 4 November throughout the Tournament on a first come, first serve basis.
Ticket Prices and Ticketing Terms and Conditions
Tickets for the FIFA U-20 Women’s World Cup Papua New Guinea will be available to purchase as a Ticket Package or as individual match days.
The World Cup will run from November 13- December 3.