http://www.economist.com/news/briefi...bang-your-buck
The most striking trend our analysis reveals is a drop in the average hourly rate of a prostitute in recent years (see chart 1). One reason is surely the downturn that followed the 2007-08 financial crisis. Even prostitutes working in places that escaped the worst effects have been hit. Vanessa, a part-time escort in southern England, finds that weeks can go by without her phone ringing. Men see buying sex as a luxury, she says, and with the price of necessities rising it is one they are cutting back on. Even when she offers discounts to whip up interest, clients are scarcer than they were. In places where the job market slumped, the effect is more marked (whether prostitution is legal may affect prices, too, but the wide variation between American cities shows that this is not the only factor). The cost of an hour with an escort in Cleveland, Ohio, where unemployment peaked at 12.5% in 2010, has tumbled.
But wait! There's more! Ladies, want to know how to maximize your rates?
Appearance matters a great deal. The customers who reported encounters to the website we analysed clearly value the stereotypical features of Western beauty: women they describe as slim but not scrawny, or as having long blonde hair or full breasts, can charge the highest hourly rates (see chart 3). Hair that is bleached too unconvincingly to be described as blonde attracts a lower premium, but is still more marketable than any other colour. For those not naturally well endowed, breast implants may make economic sense: going from flat-chested to a D-cup increases hourly rates by approximately $40, meaning that at a typical price of $3,700, surgery could pay for itself after around 90 hours. The 12% share of women featured on the site who are described both as athletic, slim or thin, and as being at least a D-cup, suggests that quite a few have already taken this route.
A prostitute’s rates also vary according to her ethnicity and nationality. What attracts a premium in one place can attract a penalty in another. According to our analysis, in four big American cities and London, black women earn less than white ones (see chart 4).
A degree appears to raise earnings in the sex industry just as it does in the wider labour market. A study by Scott Cunningham of Baylor University and Todd Kendall of Compass Lexecon, a consultancy, shows that among prostitutes who worked during a given week, graduates earned on average 31% more than non-graduates. More lucrative working patterns rather than higher hourly rates explained the difference. Although sex workers with degrees are less likely to work than others in any given week (suggesting that they are more likely to regard prostitution as a sideline), when they do work they see more clients and for longer. Their clients tend to be older men who seek longer sessions and intimacy, rather than a brief encounter.
What can I say, quantifiable data makes me hot and bothered. Lots of other good info here (including coverage of the MyRedBook bust) if it does the same for you.