I recently bought a Photoolex Battery Grip D7000 and this is what I practically got:
That was scary.
The shutter would keep clicking without me pressing it. I couldn't even access any of the menu while this was happening. I simply told myself that this is what I get for getting a cheap third-party accessory.
So I brought it back to the shop and sure enough, I got a lemon unit and they were kind enough to replace it with a new, working one that hopefully would last me at least a year.