Wanna get rid of gil sellers?

Add an in-game item that grants the redeemer a month of paid subscription that can be purchased directly from Square-Enix with real money and either used to pay for a month's subscription or sold to other players for gil. Square-Enix still gets paid their monthly fees and players with disposable in-game incomes get to save a little extra money each month, meanwhile the players who would be interested in spending real money for gil end up sending their money to the creators of the game instead of shady characters who'd just as soon turn around and rob you blind.

This in-game item should only be allowed to be sold to other players via the market. No direct trades. This should prevent scamming.