Not always. They have been known to give "marked bills" to pay with in the past. A lot can be learned by watching how ransom money moves around (bit coin is ve

Not always. They have been known to give "marked bills" to pay with in the past. A lot can be learned by watching how ransom money moves around (bit coin is very traceable this way). Sometimes paying a ransom is an important part of finding and arresting the guilty.