By Fortune
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This post is in partnership with Fortune, which offers the latest business and finance news. Read the article below originally published at Fortune.com.
By Philip Elmer-DeWitt
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The market for used iPhones is a funny thing.
It hums along steadily most of the year until, just before the launch — or, more accurately, the expected launch — of a new model, things go nuts.
This year, more than ever. A few data points:
For the rest of the story, please go to Fortune.com.
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