Amazon used to have a webpage that clearly stated they commingle inventory from all sellers, so it has long been public information that when you buy something on Amazon.com, the seller you buy from does not matter.
What I never understand: Why do they not put a sticker with an unique ID on the items (or require the seller to do so, with occasional compliance checks)? That way they could match customer complaints to the company that delivered the item, even if it is not the seller the customer bought from.
I assume they do have a method of keeping track for their own purposes.
I also assume the reason Amazon commingles is it makes their 2 day shipping promise cheaper or more possible to fulfill. If seller A’s items are on the east coast, and seller B’s items are on the west coast, and the items are identical, then it makes sense to send you the closest one.
Obviously, the problem is items are not identical, and quality control is not something I am interested in doing as a customer of Amazon’s.
