And amazon sellers can sell their data (and do sometimes) as well. All that is fine. Remember, for major retailers, a) THEY are the seller in most cases and b)

And amazon sellers can sell their data (and do sometimes) as well. All that is fine. Remember, for major retailers, a) THEY are the seller in most cases and b) in most cases they get mfg's to agree to whatever is going on in the agreement UPFRONT.