It looks like this is how you can get a counterfeit item from Amazon even
buying from a reputable seller.
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Amazon’s Fulfillment by Amazon (FBA) service offers a “commingled
inventory” setting where your inventory is mixed with all of Amazons (
including other 3rd Party sellers). Amazon will ship whatever unit in
whoever’s inventory is available. Amazon saves on shipping costs, and you
have money to use commingled inventory since otherwise you need to create
inventory labels for all your items or pay Amazon 20 cents per label to do
for you. Thus with commingled inventory, on a popular item there is a very
slim chance that a buyer ordering from your store will actually receive the
item that you sent to Amazon.
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