I think the set just has some classics in it
Maine players before they joined bigger clubs. Half the United team that won the 99 champs league were at different teams at that time
I used to love Viduka when he was in the Prem.
I don’t know how much luck you will have but have you tried the websites below? I know they stock some Aussie cards
Ja Ja collectibles
Card grading Australia
Trading card and collectibles
I have bought off all 3 in the past and pretty good.