The K-girls are the most likely to push up the fees. The Chinese girls less so. Put out the standard tip on the small tables next to the massage table after the girl takes the HF. She will see it when she gets back. Rarely any discussion. But if pushed, I say "give me a great time and I will consider more at the end". Almost always results in a great session. As an aside, the fees have been the same for over 10 years. We are lucky, as fees in other parts of the US are much more.