Besides buy the Family and Friends expansion package, you can't gift the expansion otherwise. You could log into your friends account, and buy it from your computer, it flags the account you are currently signed into. Next your friend would log into the launcher and it will download the necessary files, and good to go.
Thank you for the reply. So pay $250 or my friend cant play the game? I'm not asking him for his account info. Plus, isn't that against the EULA? He's broke. So I guess we'll have to play a different game together. Oh well.
Why would you need to pay $250.00? Even the most expensive exp isn't that high. You don't have to ask him for his account info you can go to his house and have him log in then go to where you buy the exp and then you would put in your credit card info to buy it for him.