I recently had an amazon seller ship me a different model SSD than the one I ordered. The capacity was the same, so I'll bet they were hoping people didn't notice.
It came in OEM packaging, which was little more than an anti-static bag. It had no external labels. They sealed the bag by putting a sticker the end of the drive, where the identifying information was located. That made it seem rather deliberate.
Fortunately, the bag had enough extra room that I could slide the drive over and get a picture of the label, which I then zoomed to see the model number. To get a picture through 3 layers of anti-static bag (because the end was folded over at that exact spot), I had to put it in direct sunlight, but angled so the reflection off the bag didn't blind the camera, and zoom it so that nothing else in frame blew out the auto-exposure.
In the end, the seller honored my return and refunded me the money. Some of their feedback indicated that they charged a "restocking" fee, for those who returned merchandise after opening it, even if the wrong model had been sent. If those were also in "OEM" packaging, I'll bet they turned around the same merch in a new bag, and sold it as "new" to another buyer.