Guess what will they do with a photocopy of your passport... so much info for free ! This is a scam in which you don't loose money, except the postage, but they will gain so much info about you, that it wont be dificult to find somewhere in the world
a counterfit passport with your info on it. Think about it.. for $5000.00 ? Which you will never get. They are playing with people greed, plain and simple. Don't fall for it, even though it looks easy. Be smart and don't play into their hands. That's the only way to syop those people.