ebay is inundated with those fake retail SSDs. Designed to look like WD (https://www.ebay.co.uk/itm/306437612011) or Samsung (https://www.ebay.co.uk/itm/396854754678), but without the logo. Internally they contain maybe 100GB of flash, a controller that pretends to have 4TB, and they brick themselves when you write 1 byte more than the underlying capacity. Ebay doesn't police that.
Haven't seen that for enterprise SSDs yet.
These ones are fairly obvious as though they adopt the same model name and colouring than the original, they do not show a Samsung or WD brand. I suspect they do that to avoid giving standing to these companies to sue them. If the distributor (ebay) doesn't care, and the buyers are individuals who will not sue, they act pretty much with impunity.
Is there some software to give these drives a test drive, before putting them in use?
Reply to self, another post below mentions this software:
https://fight-flash-fraud.readthedocs.io/en/latest/introduct...
Those fakes are a real scourge. People lose their data in addition to their money. Very easy to spot fake listings but the platforms allow them to proliferate. I consider the platforms to be criminally culpable because of the wilful neglect.