Where can I purchase authentic Versace Metal Jeans Cologne?

My boyfriends favorite cologne is Versace Metal Jeans. I want to get it for him for Christmas, but there's one huge problem, its discontinued!!! Does anyone know of anywhere that I can get it? Please make sure its a genuine place. I don't want to get an imitation or a fake watered down cologne. Please help. I really want to get him this for Christmas.|||online