I would buy multiple people a one month trial if that was an option, even if it costs more. But spending 50 USD for the yearly pass on a friend who plays the game casually seems a bit much. I guarantee so many of those people would buy premium once they realize how great it is. So the turnover would be great and the main demographic is people less than 30 years old, many of whom wouldn’t be willing to spend 50 on a friend without even knowing whether or not they’d make use of the year pass.