TalonRO has Putty, the Card Exchanger NPC located in Prontera. You can exchange your unwanted cards for a prize.
She can exchange your one card to one point. She will TAKE ALL your cards in your INVENTORY. So if you don't want your precious cards to be taken, put it in your cart or storage
And this is the prize that you can choose:
Here for example if you have card in your inventory and want to trade in.
Then, choose "Yes, lets do it!" if you want to trade in.
Then type "YES" if you want to continue.
And congratulations! You get 1 point. The points that you get is ingame account bound :)