Bro, $500-$700 you are looking at a foursome at most asian joints. Shop around!
At that price it would have to be one of the caucasian escorts who I happen to know in real life, as a fantasy kind of thing, or one of the touring porn star escorts such as Aubrey Black (but would need to bump up the budget).
https://scarletblue.com.au/escort/luxurious-ariadna
If you want to try an expensive Asian WL, I highly recommend this girl, but she's not in Sydney at the moment :(
I’d spend it with my best regular for 5-6 hrs of fun ($150/hr) and multiple shots.
Unfortunately she is off the rosters over 4 months…
Hole myself up in Bellevue 12 take a bag of coke and kamagra and go for 10 hours
Probably try a 3some or 4some
I could never get myself to spend more then $300, just dont see the sense in it