From FlyFF WIki
The micropayment system is used in Flyff. This game is free to play for life. Users wishing to support the game can do so by purchasing Wcoin. These Wcoin can then be exchanged for premium items not found in the game, including clothing, potions, different kinds of scrolls and pick-up pets.
To Access: Wcoin Cash Shop
Fill-Up on Wcoin: here
Aside from buying Wcoin from the website, you can also purchase Pre-Paid Cards
$1 USD is equivalent to 100 Wcoin.
Cash Shop Item Categories:
Note: The Cash Shop section of the wiki is always in active editing.
Up to Date Content. Verified on 08/13/2014.