>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 Appl

>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.