I have a Youth SL card which is valid for 2 months until 2018-08-09. It also has 79 Kroner on "access credit" in the card. You can see it in the picture. I have not registered the card, so you can register it on your name after you purchase it.
I am selling it for a cheap price. The card is worth 1219 kroner but i am selling it for a discounted price of 900 Kroner.