Moneypak has gone the way of the dodo bird...it's load to card only now,moneypak CEO was dragged before congress and publicly shamed for allowing old people to send money in to cash out the nigerian lottery winnings.
Not sure about vanilla but its getting to where everything is load to card.To protect us from scammers and ourselves(really its so they can track the money and YOU)
EDIT the pin number moneypaks will be phased out by 1st quarter of 2015 thats why they are so scarce.