Okay so imma be up front with you guys, I was looking to branch out and try a few things brothels don't offer - namely, creampie service. It's a fetish of mine.
Dont fret though, safety is the priority - always make sure both parties are free of STDs/STIs, that you clean thoroughly before and especially after (as you normally should anyway), etc.

So yeah, over the past couple months I've seen three private escorts that offer said service. I found them via Skokka and EscortsAndBabes.
Quick note, as with pretty much all advertising, they talk a big talk but actually do quite little. That's expected. Always "Come play with me, I'll be all over you" yaddah yaddah, whereas in actuality they're very inattentive and uninterested.
Anyway:

First, Ella, 22yo Japanese.
(https://au.skokka.com/escorts/sydney...pi4b300595485/)
Moves around a lot - first met up with her in Parramatta, then she moved to the CBD right by Chinatown, now she's in Liverpool.
For starters, she looks at least 10 years older than that. Oddly claims "I only speak English" in her ad, but her English is awful.
Still fairly attractive, and has massive boobs, she's admittedly pretty playful. Mucks around on her phone for a bit first. If you talk her up a bit, she might offer costume play. Be careful though, she'll instantly try to talk you into doubles service with her average looking housemate.
Photos are obviously touched up, though not far off. Hot video on most ads she posts, too. Overall, 6/10.

Second, Eddy, 25yo Singapore girl.
(https://au.skokka.com/escorts/sydney...5iyx310675345/)
Apartment near Central, right by the Powerhouse Museum. This one was a bit of an oddity - looks younger, in fact she has an insane body and a gorgeous face. Smallish boobs, cute af. Decent English. Very friendly, if rather quiet, she does try to keep up conversation.
The downside is that she seems to think creampie means CIM. Extra long and especially pleasurable BBBJ, says her friend taught her, likely a brothel girl given the technique.
Photos are a bit off, but honestly she just looks much prettier and cuter.
She should really go work for Ginza. Would be very popular Easy 8/10.

Lastly, Yumiko, 23yo Japanese.
(https://au.skokka.com/escorts/sydney...rua4262754623/)
Apartment between Town Hall and Central. Straight up catfish situation, majorly. Looks absolutely nothing like her photos. Hell, she's actually Malaysian, to boot. First girl I saw on the street after exiting her apartment looked more like the photos than her.
Average English. Friendly enough, though she did immediately try to overcharge me, before I whipped out my phone to show the rates she herself sent me.
3/10 at best.

Seems I should just stick with my regulars, ie Ginza. Wouldn't satisfy the specific fetish, but literally every other aspect would be better, and cost less to boot.
Overall - Eddy was best, as I said she should go work for Ginza. Ella was nice in certain ways, might be your thing, though she cost nearly twice as much as the others, seemingly just for being playful. Yumiko should be avoided, though I've had worse.