She may negotiate the time she will spend with the customer, the clothes she will wear, the demeanor she will adopt, and the acts she will perform. But usually she will not negotiate the portion of the initial referral fee paid to the agency. Discounts come from her end of the business. It is also expected that she will follow the steps necessary to protect the organization from detection by law enforcement. She will secure identification, she will not name either the specific act or the price in negotiations, and if suspicious she will challenge the customer to reveal his law enforcement connections, if any.
Bribery is a necessary component of illicit enterprises.
The most blatant cases are, of course, escort services and massage parlors, many of whom advertise quite openly in adult publications, newspapers, and even the yellow pages of the telephone book.