Board Thread:Love Live! School Idol Festival Lounge/@comment-33241327-20171003112655/@comment-26161729-20171003145629

you can check this thread to have an idea about how selling sif accounts go but just a reminder, like it says on one of the replies in the thread I linked, we strongly discourage users from selling their accounts as it's against sif's terms of service ^^;

and as for how google play cards work, you simply buy and add them to your google play account by clicking on the Redeem option in your account menu-- though if you're planning to buy gems with it, of course you'll have to add it into the google play account linked to your sif account ouo