That's what my first thought. But as far as I know flash memory can't really be 'repaired' so the only way they can sell a crapped out drive is to replace the flash memory and/or the controller inside. In any case, I would recommend anyone who has bought it to first run a drive health check thingie and confirm it doesn't have any bad sectors etc.
Ordered a couple, you never know 'manufacturer refurbished' could be something as simple as they've bought out the USB 3.1 version so want rid of all the old 3.0 stock!
I have one is very fast well made Hot!
Ordered two thanks OP. Effectively SSD over usb. Bought two to do Raid1. See how they go!