Summary: Most of these drives are used, but working. I ordered two drives and both had over a year of power on time. Both had over 5 TB written to them. You could argue these drives are lightly used and good enough for the price, but beware if you really wanted a new drive.
Summary: 2 older drives with 4 years on them plus the 2 new ones I received made for an awesome performing Raid-0 array that may be more durable than the SSDs. Connected to an ARC-1882ix-16 controller gives 620MBs reads/writes with a 5ms access time.