Yes, but not for batteries or OEM bits. Bought a car charger and a window holder I think.

I was looking for a replacement SPen for my Note 2 as my daughter bit the tip off. Loads of places that sold "genuine" pens clearly weren't and reviews on Amazon said they didn't even fit the pen slot in the phone.

And looking on eBay last night for a spare charger for the laptop. "Genuine Lenovo AC adapter". No sign of Lenovo on the pictures.

I have a genuine HP notebook adapter somewhere. I know it's genuine, because it says on it in big friendly letters GENUINE HP AC ADAPTER 

/Definitely/ genuine then.

genuine anker ones should be more widely available though? Unless the counterfeit ones are so naughty they got into proper suppliers, I've heard of it happening with memory cards.