Is this a scam "El Gordo" lottery?

Okay, my friend is a vivid lottery ticket buyer, from all around the world (yadah yadah) And just today he got a call from (and a REAL message "snail mail") saying that he had won 30M dollars or something, i got really ectited, but then he said they asked for some personal things and he answered them, and then they asked for 1,600(or something like this) to pay for a lawyer fee and transfer fees, he said he will look into getting the money, and they will call him back in a week... I told him that this sounds like a scam and that you shouldn't do it, but he wont just believe me...

Sorry if this is long, i'm trying to prove a point to a friend (although i may be wrong, and if i am i'm sorry El Gordo company for thinking poorly of you)