Dunno. But they sell a LOT of stuff, and get a LOT of returns of most everything, or so it seems.

I've had nine SSDs here now. Six have worked flawlessly, three of those in very hard service for some time now.

One died completely shortly after arrival, and got returned. Its replacement (different brand/model) has been perfection.

Another, my original 120GB Vertex, lost everything once, but has been flawless since being reflashed with newer firmware, and is still my main "everything" drive.

Cheers