The price of sexual services in nightclubs and massage parlors of San José,

Humans and other primates exchange sex for resources. In the case of humans, this exchange includes sexual work. There are few previous studies on sex work in San José, Costa Rica that include data on how much is paid for sexual services. We studied the price of female sex work, and how the profits are distributed among all parties, in nightclubs and massage parlors, by obtaining data from interviews with workers and owners, and from telephone calls, from 1994 through 2010. Prices ranged from US$6 for a lap dance to US$300 for intercourse and when inflation is taken into account, they have not increased much in the last ten years. The prices per hour can reach 125 times the minimal wage per hour of work in the country. In comparison with independent sex work done in the streets, parlor and club women benefit from the associated infrastructure, access to clients, and safety, and they receive 40-50 % of the fee paid by men for their direct services (dances, sexual activity), so there is no indication of exploitation on either side. Nightclubs have around 30% of profit after expenses are deduced. Sexual services are relatively expensive but men pay them because they are biologically and socially oriented towards wanting these services.


RESUMEN
Los humanos y otros primates intercambian sexo por recursos.En el caso de los humanos, este intercambio incluye el trabajo sexual.Existen pocos estudios sobre los precios del trabajo sexual en Costa Rica.Estudiamos el precio del trabajo sexual femenino en clubes nocturnos y salas de masaje mediante entrevistas a trabajadoras y dueños, y llamadas telefónicas, entre 1994 y 2010.Los precios van desde US$6 para un baile erótico a US$300 para el coito y tomando en cuenta la in ación, no han aumentado mucho en los últimos diez años.Los precios por hora puede llegar a 125 veces el salario mínimo por hora vigente en el país.En comparación con el trabajo sexual independiente hecho en las calles, las mujeres de clubes y salas se bene cian de la infraestructura asociada, el acceso a los clientes, y la seguridad que ofrecen estos sitios, y reciben el 40-50% de la cuota pagada por los clientes por servicios directos (bailes, actividad sexual), por lo que no hay indicios de explotación de una u otra parte.La ganancia neta de los clubes es de un 30%.Estos servicios sexuales son relativamente caros, pero los hombres les pagan porque están biológicamente y socialmente predispuestos a querer a estos servicios.
In Homo sapiens, the behavioral evidence indicates that women in all but the most restrictive societies engage sometimes in extramarital sexual unions.In the USA, the rate is 20 to 50% for married women (Greiling & Buss 2000).However, this phenomenon is not limited to humans, females of other species also perform sexual acts in exchange for resources with males that are not their longterm partners (Alcock 2009).
In the case of married women, the bene t from sexual intercourse with men other than their husbands results from becoming impregnated by a genetically superior man (Better Genes Hypothesis), by using sexual intercourse to get rid of a husband (Mate Expulsion Hypothesis), by acquiring a better husband (Mate Switching Hypothesis) or as a means of nding a higher-quality mate in case their current partners someday need replacement (Greiling & Buss 2000, Schmitt & Buss 2001).
Additionally, a woman may use short-term mating to deter future a airs after nding that her husband had a relationship with another woman (Preemptive Revenge Hypothesis), to increase her skills (Honing Mating Skills Hypothesis) and to elevate her self-esteem and later make better mating decisions (Self-Esteem Hypothesis) (Greiling & Buss 2000).Some of the hypotheses mentioned here are not mutually exclusive, and in summary, the works summarized by Greiling & Buss (2000) and by Alcock (2009) indicate that women can receive several advantages from sexual activity with a variety of men, including resource accrual, better mates and genes, and improved self-esteem.These factors can apply both to women who have "lovers" and to women who practice sexual work (Buss 2007), a particular case of this relationship that occurs when a woman exchanges sex for an economical retribution (we will avoid the old derogatory term "prostitution" in most of this article).By doing sex work, women can gain access to some men with many resources or to many men with some resources, thus accumulating larger amounts of resources than they could obtain through other means (Resource Accrual Hypothesis; Greiling & Buss 2000).
In contrast with biology, social sciences focus on how cultures perceive sex work.Historical records indicate that in the temple of Mylitta (Iraq), all women were required to do sex work at least once in life, as part of a religious service that provided funds for the temple (Murphy 1998).A similar view survived until Roman times and still exists in some areas of India, but the rise of the Judeo-Christian and the Islamic patriarchate changed the view in most of the Western Hemisphere with an ideology that rejects sexual practices outside marriage (Murphy 1998).Thus, Judeo-Christian and Islamic societies repress many aspects of human sexuality, including sex work, and de ne how women and men can see sexuality, with strong gender stereotypes (Murphy 1998, Ortiz et al. 1998).
Under patriarchate, woman is seen as part of the natural goods that man has "the right to posses" and the sexuality of woman is controlled accordingly (Ortiz et al. 1998); woman is the "weak sex" that leads to the "loss of virtue" in man; her "honor" lies in her ability to control her own sexuality, while a man's honor is based in controlling the sexuality of "his women" (Murphy 1998, Ortiz et al. 1998).Even though acceptance of sex outside marriage has changed signi cantly over the last 50 years in some societies, sex work is often seen negatively (Murphy 1998, Ortiz et al. 1998).
Today, Costa Rican society is the result of the imposition of the Judeo-Christian Spanish culture on the original inhabitants, including a double moral that condemns sex work but sometimes forces women into by keeping them economically vulnerable (Ortiz et al. 1998, Reskin & Maroto 2011).For example, sex work was allowed in 19 th Century Costa Rica, as long as it was not too conspicuous, but in the 20 th Century the view changed when sex workers were seen as vectors of disease: a threat to public health (Ortiz et al. 1998).Legislators, social workers, psychologists, politicians and reporters alike deny these women their condition of workers, and as a result, they are particularly vulnerable to many disadvantages and prosecution from authorities and the general Costa Rican public (Zamora et al. 1996, Ortiz et al 1998), just as has long been the case almost everywhere (Murphy 1998).Sex workers, male or female, lack the bene ts of social security and labor laws because they are not part of the o cial economy (Rojas et al. 2009).
The older labels of "temptress" and "source of corruption" have been replaced in recent years with updated labels based on the belief that sex is an intrinsically bad activity that is done with the "dirty" part of the body.The media still associate sex workers with "AIDS" and "foreigners", ask the police what they are doing to deal with "the problem" (despite the fact that sex work is legal in Costa Rica), and report an omnipresence of "sexual exploitation" and "child prostitution" even when no such things are involved (Monge-Nájera et al. 2009).Furthermore, sex workers also have to work cooking, cleaning and raising children in their homes, and this double occupation causes them to feel stressed, exhausted and guilty for not doing enough (Zamora et al. 1996, Herrera 2000).
There are few previous studies on sex work that include data on how much is paid and earned for sexual services in Costa Rica.Reports from the late 20 th Century mention payments of up to US$100 per service (Ortiz 1994) and monthly earnings of US$50 to US$480 per woman (Cedeño 1994).More recent data show that women who do sex work have incomes that are far superior to those they would have as cleaning ladies, receptionists, cheap laborers in the "maquila" sector or other jobs be tting their educational level (Monge-Nájera et al. 2009, Ramírez et al. 2009, Rojas et al. 2009).A recent study argues convincingly that sex work enables some Costa Rican women not only to subsist, but also to give themselves and their families a relatively high standard of living (Rivers-Moore, 2010).This report adds new information from several perspectives: how the prices have changed with time (previous studies dealt only with the prices in their own periods); the amounts earned by nightclubs based on internal accounting data, and additional information on how the pro ts are distributed.Ethics: we interviewed our informers with respect for their condition was workers or owners, our data do not include information from which individuals can be identi ed, and the information published in this report can serve as a scienti c basis to justify a more honest and equalitarian treatment of sex workers.

Price of services in nightclubs
In 2001 clients paid US$8 to enter a nightclub; others had higher rates but these included two drinks.In 2011 the entrance cost US$10 and included a lap dance.This basic payment allowed the client to watch the dances, other services were charged additionally.Usually, the services were as follows and the client remains fully dressed except in the intercourse option (all prices in list: year 2001 and then the 2011 fee): • Table dance: the woman makes a short "strip-tease" (dance in which she slowly removes all her clothes) near the client table so that he can see her at short range, usually no physical contact is allowed; US$6 and US$9.
• Lap dance: the woman dances on the clients lap, rubbing herself against his pubic area and he is allowed to touch her breasts; US$12 and US$9.In some places she removes her top for this dance.
• Private dance: the woman dances nude in a private room and the man is allowed to touch her breasts and other body parts (sometimes she will perform oral sex for an additional amount); US$20 and US$15.• Intercourse: full sexual intercourse.Price US$100 to US$300 the hour depending on the place; room with jacuzzi: additional US$75 per hour.In 2001 there was also a "take out" option in which the client was allowed to leave in the company of the woman after paying US$100 to US$200 to the club; payment for the rest of the services was de ned by the woman but normally was in the hundreds of dollars for a whole weekend.In 2011 the price per hour (including a bottle of champagne) was US$200 for the house and US$100 for the woman.Note: our results are for upper scale nightclubs.Some low-level bars in the poor zone of the city also advertise themselves as "nightclubs".In 2001, clients paid US$9 per hour including sexual intercourse and room in these bars.The women earned around US$1000 per month because even though their fees were lower, they had intercourse with several clients on a single night.

Price of services in massage parlors
Parlors o ered a combined service of massage and sexual services that ranged from provoking an ejaculation with the woman's hand to full intercourse with one or several women.Rates normally are given for half or full hours.In 2002 the mean hourly price was US$15 (in 2010 it was US$33).From 2002 to 2010 the half-hour cost increased by 27% and the hour by 12% (Fig. 1).

Distribution of pro ts
According to the interview data, the monthly sales for San José nightclubs were high in 1994 (US$50 000), fell in 2001 (US$10 000) and by 2007 they were increasing (US$14 000).Throughout this period, the net pro t was around 30%.
In 2001 women from upper scale nightclubs were required to do two dances per night and earned US$5.9 per dance.They also received US$1.4 for each simple drink bought by their customers.For the other services (dances, intercourse) the standard proportion of income taken by the women was 40-50%, adding to a monthly total of about US$2 000.In 2011 the proportion received by the woman for her sexual service was still nearly 50 % of what the client paid.
In massage parlors, 50% of the fee paid by clients was used by the woman to pay for the use of the facilities; she kept the rest.We could not obtain data on gross and net income for owners of massage parlors.

DISCUSSION
The amounts spent by individual men in Costa Rican nightclubs and parlors are comparatively high, considering that the prices can range from US$9 to more than US$200 per hour, while the minimal wage in the country is US$2,4 per hour (Costa Rica, Ministerio de Trabajo y Seguridad Social, o cial salary, downloaded August 1, 2011: http://www.mtss.go.cr/salarios-minimos.html.The prices per hour of sexual services can reach 125 times the minimal wage per hour of work in the country. Anthropology has proposed several explanations for the use of resources in human societies, including a show of status, and in the case of nightclub and massage parlor clients, their economic status allows them access to physically attractive women.In the case of parlors, men can perform sexual activities that for any reason they will not do with their long term partners, such as having sex with two women at the same time (Rojas et al. 2009), an increasingly popular service that might re ect both a frequent male fantasy and a reaction to commercial sex videos.In the parlors, men can also receive an erotic prelude to sex in the form of oil massages performed in a low light room where scent veils are burned (Murphy 1998, Rojas et al. 2009).
Like practically any other contemporary human society, Costa Rican society stigmatizes sexual work and mainly punishes the women who practice it (while clients receive a less harsh treatment), but at the same time, this society promotes sexual work by maintaining the nancial pressure that leads women to it (Ramírez et al. 2009, Rojas et al. 2009).
The relatively high prices of sexual services may re ect not only the supply and demand principle (a very small proportion of the Costa Rican female population sells sexual services) but also the social cost that this work has for women (Rojas & Scott 1994).The American cliché of the "pimp" that exploits women is absent in Costa Rica, probably because sexual work is legal in this Central American nation.In the USA, where female sex workers practice illegally, they are more easily victimized by policemen, clients, "pimps" and other parties (Murphy 1998).
If we turn from the anthropological interpretation of social pressure to the biological interpretation, the biologically centered Sexual Strategies Theory (Schmitt et al. 2001) is also consistent with our results.Nightclubs and massage parlous bene t from the natural behavior of man towards attractive women and short term mating.Like other mammals, individual humans present a large variation in the resources they can accumulate.Women care greatly for their o spring and sex work allows some of them to obtain a high ratio of resources per hour of work (Greiling & Buss 2000, Buss 2007).
In turn, nightclub and parlor owners can bene t from men's willingness to spend in sexual services, although they can be subjected to social harassment from neighbors and the police.
Is there exploitation of women in this business?There is exploitation when one party receives a disproportionate part of the earnings.In nightclubs, women receive 40-50 % of the fee paid by men for their direct services (dances, sexual activity), while in turn the nightclub has a 30% pro t after expenses are deduced.The total amount received by the club is much larger that the amount received by the women who work in it, but we ignore if this is di erent from the total proportion received by workers versus owners of any other business organizations such as religious groups, supermarkets, private schools and any other business organizations.Like workers anywhere, the women do not pay for infrastructure, sta salaries, insurance, taxes, electricity, water, maintenance and other costs (these are covered by the owners of the nightclub or parlor).Just as the owners bene t from the work of their sta , the women bene t from the infrastructure, services, access to clients, safety and social backup network from other workers that they have when they rent rooms in a parlor or work in a nightclub (Monge-Nájera 2009).Women who work independently do not have these bene ts, but have more control over when, where and how they do their work.
Our results agree with the nding that sex work allows women to consider themselves good mothers who spend time with their children and provide them a good standard of living that they could not obtain in other forms Nightclub data were obtained from an open interview with a person who had internal access to accounting records from two San José nightclubs from 1994 through 2001, and interviews with the owners of two nightclubs.The accounting interview took place in March 2001, the interviews with the owners in 2007 and 2011.Access to such data was only possible because of the rapport established with the interviewed people after several years of eldwork.Field observations in clubs were made by both authors.Massage parlor data were obtained by calling the parlors that advertised themselves in the classi ed ads sections of two daily Costa Rican newspapers, La Nación and Diario Extra, in September and October 2002 and again in November 2010.JMN visited ve parlors in 2002 and ve in 2010 to corroborate the information obtained by telephone.Amounts are presented in US dollars according to the exchange rate with Costa Rican currency (508 colones per dollar) as to May 9 th 2011.