be smart about it i guess, no way to really surefire avoid a scammer tbh, just be cautious

use common sense and put yourself in his place and see what you would say that sounds legit but is a false way and scams you... hard to explain but if its not backed by anyone like vouches and stuff definitly dont buy and if you can find any other place that has the same sellers DONT BUY bc it means they cant do it obv this one guy cant either... look at his selling style... Icons logos... how well put together his online shop is if everything looks legit... look at the prices too HIGH deff should throw a warning but too LOW also should be a warning look for prices that are close to if not exact as others and compare to others selling but like i said before if none else is selling dont buy... just play it safe.. and if u have a gut feeling that it might be a scam DONT take the chance just DONT BUY IT its not worth loosing your money and time over it