The price for one content ID (one character per ID) it costs $12.95. If you want to play the card game Tetra Master you pay an additional $1.00. After you purchase your first content ID, you can purchase more for an additional $1.00. Because you can change your job at any time, you don't really need a second character unless you want to play as a different race.

You can cancel your content IDs at any time. If you do not access your ID for a period of 3 months, they terminate it, I believe.