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The problem with commingling is counterfeits. Counterfeits are often not easily detected by the customer without significant effort.

• ikeboy 8y ago
  That's an issue with or without commingling.
  • fgonzag 8y ago
    It isn't. Without commingling I know for a fact that if I buy from Amazon I'm going to get a genuine product (I don't really think Amazon acquires their stock through grey channels). With commingling, I no longer the guarantee of knowing which seller's stock I'm receiving. The customer loses valuable information and decision power with commingling, especially important in these bazaar-type situations.
    • ikeboy 8y ago
      >I don't really think Amazon acquires their stock through grey channels There are plenty of vendors selling to Amazon that aren't the brand owner. Look up Apple vs Mobile Star, they sued a company that was selling (allegedly) fake products to Amazon as a vendor that showed up as "sold by Amazon", nothing to do with commingling. And the fraction of customers that care about choosing which seller to buy from is low, compared to those who care about price and speed of shipping. Amazon turns off commingling on high risk products, fwiw.