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Amazon, I believe, checks for the weight of the package to ascertain if the contents are what they were supposed to be.

• hoskdoug 7y ago
  Source
  • maimeowmeow 7y ago
    When you open the case, the nitrogen gas which was included to help avoid decomposition escapes, hence the half refund.
• zaroth 7y ago
  A missing DVD cover discovered by a weight discrepancy? Who’s to say it was returned in the original envelope? Perhaps more likely the extremely light items weight is hidden in the variance of the return packaging weight and so those packages have to be opened?
  • AnssiH 7y ago
    A missing cover sounds like it would be visible without opening the product packaging (which would be the cover itself, no?), i.e. they can easily notice the omission by comparing the returned item against a reference image. In the OP case the product packaging was filled with dirt, which is not as easily discoverable without opening product packaging.
    • zaroth 7y ago
      Ah, they open the shipping envelope. They don’t open the product box itself. Of course.