There are many small night club/ktv in MongKok most of them located in Portland Street, temple street and ShangHai Street. Those KTV in Mongkok is relatively cheaper, their price is lower before 8pm at night time. In their advertisment, most of them saying 300, 500 dollars but please don't trust them.
You have to prepare HK$1000 -2000 dollar for 2 hours fun including unlimited beer, the girl will bring you upstair of ktv for a private room to have sex with you. It is a place for most of the local people to visit for alcohol and sex. Of course, you can stay for more than 2 hours but you need to pay more.
some ktvs are shown here....
