Well, if you buy off Aliexpress you do have to keep your wits about you and I certainly don't believe the branded products for sale there are genuine.
However, with eBay you pay a buyer's premium (sorry, "Protection Fee"); I'd raise a dispute, citing them bein fake/not as described.
Similarly, if you buy something on Amazon and a fake turns up then there's recourse by contacting their CS via chat/callback.
As for Hercules wall hangers, I think there were issues with them a while back and I wouldn't have them anyway.
That said, they are often used in shops.