Skip to main content

Why are women charged more than men?

Evidence (albeit somewhat anecdotal) suggests than women are being asked to pay considerably more than men for almost identical consumer products. This seems to apply to clothing, toiletries, toys, even pens. Why? It is hard to believe that it costs more to produce products for women than men. So, I think we can safely discount the idea that the difference is being driven by costs. The far more likely explanation is price discrimination.
      To illustrate consider a very simple example. Imagine you are the owner of a company making jeans. It costs £25 to produce a pair of jeans and you are currently selling them at £50 a pair. At this price you sell 100 a week to men and 50 a week to women. The key question you have to consider is what would happen to sales if you increase (or decrease) the price? Suppose that at a price of £55 a pair you estimate you would sell 80 to men and 45 to women. On the male side this is a bad deal because profit falls from (50 - 25)(100) = £2,500 to (55 - 25)(80) = £2400. But on the female side you do well because profits increase from £1,250 to £1,350.
       In this example it clearly pays to charge women a higher price than men. But note that this is because women are less sensitive to price than men. This is different to saying that 'women are willing to pay more than men'. After all, you were selling less jeans to women than men. Generalizing from this example, optimal pricing is always driven by how sensitive a market will be to changes in prices. So, if firms are charging lower prices to men it would seem that men are more likely to react to price than women. This, though, is not the end of the story.
       The story so far is one of 3rd degree price discrimination - different categories of consumer (namely male and female) are being charged a different price for an identical product. Textbooks will tell you that 3rd degree price discrimination can only succeed if there is no potential for arbitrage. In other words it must not be possible for women to buy from the male market. There appears, however, little to stop that happening. This suggests, therefore, that women, as well as being less sensitive to price, are also reluctant to shop around.
         Arbitrage, though, is not just about buyers' willingness to shop around because someone else could do the shopping around for them. If, for instance, identical products sell for £5 in one location and £10 in another an enterprising individual can buy the product at £5 and sell it for £8 at the other location. There is simple money to be made. That this has not happened would suggest the firms involved have significant market power. Enough market power that no one can steal their market. This is unlikely to change any time soon.
        But, the recent news may lead to more women shopping down the male aisle of supermarkets. Ultimately arbitrage should win through and lower the price gap between male and female products. Unless, that is, the price differential is actually being driven by something different. If, for instance, the products compared are not actually identical, and a pink pen is not really identical to a blue one, the price differential can persist. So, don't expect arbitrage to eliminate all of the gap between male and female prices.             

Comments

Popular posts from this blog

Honesty around the world

In my last post I looked at dishonesty in the banking industry. Sticking with a similar theme, this time I will at dishonesty across different countries.        Let us start with a study by David Pascual-Ezama and a long list of co-authors on 'Context dependent cheating: Experimental evidence from 16 countries'. They asked 90 students in 16 different countries to perform a very simple task: toss a black and white coin and record the outcome. If the coin came up white the student obtained a red Lindt Lindor Truffle. If it came up black they got nothing. Crucially, the coin toss took place in private and so the student could report whatever outcome they wanted. If they wanted a chocolate then they simply had to report white. (The study contrasted three different methods of reporting - form put in a box, form given to the experimenter or verbally telling the experimenter - but I will skip those details here.)           The chart below summa...

Prisoners dilemma or stag hunt

Over Christmas I had chance to read The Stag Hunt and the Evolution of Social Structure by Brian Skyrms. A nice read, very interesting and thought provoking. There’s a couple of things in the book that prompt further discussion. The one I want to focus on in this post is the distinction between the stag hunt game and the prisoners dilemma game.    To be sure what we are talking about, here is a specific version of both type of game. Adam and Eve independently need to decide whether to cooperate or defect. The payoff matrix details their payoff for any combination of choices, where the first number is the payoff of Adam and the second number the payoff of Eve. For example, in the Prisoners Dilemma, if Adam cooperates and Eve defects then Adam gets 65 and Eve gets 165. Prisoners Dilemma Eve Cooperate Defect Adam Cooperate 140, 140 65, 165 Defect 165,...

Revealed preference, WARP, SARP and GARP

The basic idea behind revealed preference is incredibly simple: we try to infer something useful about a person's preferences by observing the choices they make. The topic, however, confuses many a student and academic alike, particularly when we get on to WARP, SARP and GARP. So, let us see if we can make some sense of it all.           In trying to explain revealed preference I want to draw on a  study  by James Andreoni and John Miller published in Econometrica . They look at people's willingness to share money with another person. Specifically subjects were given questions like:  Q1. Divide 60 tokens: Hold _____ at $1 each and Pass _____ at $1 each.  In this case there were 60 tokens to split and each token was worth $1. So, for example, if they held 40 tokens and passed 20 then they would get $40 and the other person $20. Consider another question: Q2. D...