I recently bought two of these from Amazon. I've had great experiences in the past with the 1.5 and 2 TB versions of the WD Green drives, I have 5 or 6 of them.
The first one was from a "fulfilled by Amazon" seller. The drive went bad after formatting, while trying to fill it with data which is my normal QA method for a new drive.
Returned that one and got one sold directly by Amazon. That one wouldn't even get recognized by my system.
Returned that one and went with the Hitachi 2TB CoolSpins. Out of 8 of those, one was DOA (which might have been due to the amazingly bad packing job of 4 drives clumped together by Newegg.) It would only make clicks when I tried to format it.
So I tend to not trust the WD Greens right now. But in any case, make sure you do a long format and fill the drive with data, junk, whatever before you start trusting it.