It was sold by Amazon itself rather than a third-party seller, which is often the case with these sorts of fake items.
The fact that the packaging was sealed and the CPU was unused suggests that this was not one of those instances in which someone bought an item and replaced it with a fake before sending it back for a refund.
co-mingled inventory strikes again.
i've been half-expecting them to roll-out drm for everything including cat videos and shit for awhile now.