I wonder if a good portion of these have been due to user error. I know on many of the Korean 1440p auctions it states they only work with certain GPU's. I'm not sure if you can just plug one of these into average joes Dell with on board video.
I've seen mention that these do not have a scaler... i.e. they only work at 2560x1440, 1280x720 and 640x480 (according to the TomsHardware review), but also googling, I see some pretty unhappy customers on Amazon complaining about the monitor going crazy for several moments, then **poof** no power.
If the limited resolution options are OK for you, and you aren't worried about the potential hassle of returning the unit for replacement (I'd guess these are units returned with bad power supplies, which were replaced), then this might be an excellent monitor.
For my own displays, I ended up going with Dream Seller on eBay - 2 X-Stars and a RAEANTech, and I'm pretty happy with them so far.