As some of you may have noticed. There are links on the Select World page to Purchase and Redeem Tokens. This is for if you want to purchase tokens in order to get access to game without waiting for your free tokens to grow. Later you will also be able to supplement your free tokens with paid tokens in order to create a private world. (If you wait long enough, you wont need paid tokens)
Any comments on what the rate of Tokens vs Cost is like and general layout (Which is being refined) is welcome. We will be fully announcing the feature shortly.