(the temp sensitive Coke machine is reacting to supply and demand (higher temps, more demand, higher prices)
You're right; these machines would not individually price discriminate.  Perhaps the next generation of machines will have cameras and algorithms to estimate how thirsty each consumer is :)  (The cameras in these machines will also count how many other soft drink machines are in the area.)
 
but it does seem a bit strange they don't focus more on keeping customers with a solid record of purchasing. (i spend about $100 a month at Amazon).
Maybe you should stop using Amazon for while and see if they send you any "loyalty" incentives in response.
 
Seiji
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Seiji Steimetz                                                            Office:  SST 311
Graduate Student                                                       (949) 824-1390
Dept. of Economics
University of California, Irvine
3151 Social Science Plaza                                  [EMAIL PROTECTED]
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"We dance round in a ring and suppose,
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----- Original Message -----
From: Erik Burns
Sent: Friday, September 15, 2000 5:19 AM
Subject: RE: "Dynamic Pricing"

this is an interesting move from Amazon, if true. The difference with the temperature sensitive Coke machine is that the price rises for everyone for external reasons. with the Amazon move described here, the discriminatory pricing is based on individual characteristics and is therefore actually discriminatory. (the temp sensitive Coke machine is reacting to supply and demand (higher temps, more demand, higher prices) while the point-of-purchase price differences do not.
 
something that has always intrigued me about Amazon (being a regular client) is how they offer almost nothing for loyalty or regular use. i guess i was expecting something in the way of discounting or gift certificates or something. maybe i just don't spend enough there, but it does seem a bit strange they don't focus more on keeping customers with a solid record of purchasing. (i spend about $100 a month at Amazon).
 
etb  
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Seiji Steimetz
Sent: Thursday, September 14, 2000 12:13 AM
To: [EMAIL PROTECTED]
Subject: "Dynamic Pricing"

It looks like (3rd degree) price discrimination is becoming more sophisticated.  Check out the following article:
 
 
According to the article, Amazon.com uses various gauges of your "price sensitivity" (read: own-price elasticity of demand), such as which browser you're using, to determine what price to charge you for DVD's.  It also discusses Coca-Cola's investigation into vending machines that can automatically adjust prices according to outside temperature.
 
I think most economists will think this is pretty cool.  However, I doubt that the public response to such practices will be favorable.  This leads me to wonder about one legal ramification.  From what I understand, price discrimination is de jure illegal (but not de facto illegal) if it interferes with competition.  Will price discriminating Coke machines impede or promote competition?
 
Seiji
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Seiji Steimetz                               Office:  Social Science Tower 305
Compulsory Union Fee Paying Graduate Student
University of California, Irvine     Email:   [EMAIL PROTECTED]     
Department of Economics          Web:    http://zotnet.net/~steimetz    
3151 Social Science Plaza        Office:  (949) 824-1372
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"Every time a calf is born, the per capita GDP of a nation rises.
 Every time a human baby is born, the per capita GDP falls."
  -- Julian Simon
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