I would not reward someone trying to con their customers. There are a lot of fake MB-D11 grips being sold as genuine Nikon products, even copying the serial number style and logos. Many of them selling for close to or the same price as Nikon units. I would suggest going with a 3rd party that says what it is, has a good seller rating and does not try to pass it off as Nikon. So far I have had excellent service from grip by Zeikos(D90), Meike(D7000) and Pixel(D800, cost more, $106, but seemed better reinforced that the $60 models) My Meike cost only $60 on Amazon from a US dealer including 2 day delivery when I bought my D7000 in California.
The reason I am sure the HK grip is fake is that the wholesale cost of the real MB-D11 is 3 times that price asked. Stan St Petersburg Russia