ruelasmarI've always been confident that Drop features 100% authentic products on their site. If you have reason to believe a knock-off or counterfeit product is being sold here, by all means speak up - we want to hear about it.
I'm not a Ray-Ban employee or expert, but based on the photos description and price of these shades - they look legit.
Luxottica, the Italian manufacturer of Ray Ban has chinese factories. They declare that Chinese made glasses are the same quality as Italian made.
But in my opinion nobody can evaluate the quality of the product based on pictures.