How does his bank know he's a fraudster....? Of course it's a crime and hopefully the police will get him to court and hopefully a bank will refund your cash but at the end of the day it's your fault for transferring such a large amount of money to someone you'd never met for a product you'd never seen !
I mean why would someone send the full amount before the day of trade?
Your only recourse might be via a court but then if he has no assets its not hard for that sort of person to dodge it!