Crystal Asks: The Price of Cologne in the US

So, why would the Calvin Klein men's cologne, Obession, be less expensive than the Calvin Klein women's cologne, Eternity?

 

Some price investigation:

 

At Amazon the 1 floz bottles run $39/$45 respectively.

 

At the CK website, men's come in 4oz bottles for $71, and women's come in 3.4oz bottles for $78. Men's have the option of 6oz, but 3.4oz is the highest available for women.

 

Obsession came out in 1986, 1 year after the female version. Eternity came out in 1988.

 

Is there a difference in technique? Can the price of spices and scents used influence price so obviously? Or is this just plain old sexism at work?


ETA: Seems the whole damn industry is messed up:

 

http://www.dailyfinance.com/2012/05/22/celebrity-perfume-cost-breakdown/

 

http://www.dailymail.co.uk/femail/article-550511/Perfumes-trial-The-truth-scent-industry.html