I ordered one of the OEMs that is from a kit. I would not consider a knock off.
I wonder if there are counterfeit ones out there yet?
GuangDong, China - you can find any high end counterfeit stuff there. Iphone $10-$12, Rolex $5-$45, Tayormade golf clubs(set) $40-$200, Nikon & Camera DSLR and lenses $110 - $400 more...more...and more . I'm sure they do