I love to find cheap accessories on Amazon. You do not need Amazon Prime to get this deal. The scarf ships free from China in about two weeks to your mailbox.
I get cold when I travel and I love it that this takes up very little room. If I am not wearing it and do not have room in my bag I just tie it onto the handle So many options! I own the purple and the black one, the price can vary but I think I paid $3.50 each including shipping.