Was in Perth earlier this month. Quite a few obvious working girls on Wechat, $130/half, $200/hr.

Here are some wechat IDs which you could try.

Call me Maybe
Gossip Girl
Massage Kensington, Morseby St, Kensington
Ruby
Secret
Sis Tan (wecaht ID sisi20152025)

Seems not all the profiles display the ID, so maybe this is not so helpful..

Anyway, search using People Nearby after 5pm yields much better results.

Brainsex