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A comment on Amazon has a patent to keep people from comparison shopping in stores. Parent comment

Re:Amazon has a patent to keep people from comparison shoppi... by pilsetnieks on Friday June 16, 2017 @03:18PM (#14571884)
Every reputable seller also has email. In Amazon's case you don't even need that, you just need to click a button.
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Re:Amazon has a patent to keep people from comparison shoppi... by sbierwagen on Friday June 16, 2017 @03:31PM (#14571973) 

  In Amazon's case you don't even need that, you just need 
  to click a button.
Yes, that was the point of the thread. On Amazon's site, order cancellations are automated and can be done on the website, while for many other online stores you have to contact a human to do it manually.
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