Is it OK to buy from StockX?

I'm considering making a purchase from StockX, but I'm not sure if it's a SAFE and reliable platform. Can you tell me more about StockX and whether it's okay to buy from them? I've heard some mixed reviews and I want to make sure I'm making an informed decision. What kind of authentication process does StockX have in place to ensure the authenticity of the products they sell? And what happens if I receive a faulty or counterfeit item? I'd appreciate any insights you can provide to help me make up my mind.