[ThePowerOfFuet]

From the page you linked to:

> For inventory tracked with the manufacturer barcode, each seller’s sourced inventory of the same ASIN is stored separately in our fulfillment centers. We can also track the original seller of each unit.

[lotsofpulp]

That doesn't say items sold by Amazon.com are not subject to the following:

>We may fulfill that order using another seller’s unit of the same product if it’s closer to the customer

Another piece of evidence that Amazon doesn't really want to be a retailer is that they removed the option to filter items to only shipped and sold by Amazon.com