The real pedals have the Shimano Ultegra label on it. The 'fake' ones clearly do not have any Ultegra or Shimano labels on it.
Did you even look at the links I posted?
Shimano Ultegra PD-R8000 SPD-SL Carbon Pedal 9/16" Road Bike Cycling SH11 Cleat 692757023618 | eBay