It takes very little caution to avoid being scammed. Can you put 1000lbs of Reloder 22 or 26 in your cart? Can you put 100,000 Federal 215M primers in your cart? If the answer to either question is yes, it's a scam. Do they only accept emt or crypto for payment? If yes, it's probably a scam. Do they list handguns or prohibited magazines for sale? If yes, it's a scam. If the answer to all of those questions is yes, it's definitely a scam, and you should know better than to send them any money. And if you have sent them money, it's gone, consider it a lesson.