this girls nomally dun under any OKT, they are under agents who will introduce them to the pub that they are working. then these girls will pay the agents money and loggings. some of the girls i would say, will ask u go hotel and u have to pay for it. ranging from 80-120 depends. u have to nego urself lo. for those who only come sit sit, hug hug, tipping is normally 10-30 depends on you and the time she spend with u la. $20 should be safe for u. cheers! enjoy!