These have been going for years and i can proudly say i have never fallen for one of them by post or email.
I did however fall for one of those community hall auctions back in the 80's or 90's and bought what they called the passport to the auction and purchased a vegtable knife for a fiver. Still cannot believe i fell for that.
I used to use cb radio and had QSL cards which are like a postcard reply to confirm contact. Similar to radio ham cards. With my name shortened to Jackie i had some very long letters [thinking i was male] from women in third world countries offering to marry me.
The letters were astonishing. What they offered to do to me was not possible as i did not have the equipment....think about it.