There are lots of freelancer prostitutes in the Jakarta nightclubs, especially in Northern Jakarta, Blok M area and Hotel bars.
White expat males are called Bhule in Indonesia and local girls love Bhules (western guys).
On any given day you will find at least 100 Indonesian girls there to meet potential customers.
Blok M starts to be crowded 8pm and before that it is probably to early.
Most of the freelance girls do not arrive earlier than 9 or 10pm.
If it is for the first time that you are visiting the red light areas in Jakarta, then consider being absolutely alert about your surroundings.
There are chances of you being a victim of certain scams and other fraudulent activities if fail to understand the intention of a particular person.
The Jakarta Post reported that high-end prostitutes in Jakarta could earn Rp 15 million - Rp 30 million (USD 1,755 to 3,510) monthly, able to charge more than Rp 3 million (USD 350) per session for their services.