"In order to prevent fraud, the sale of a character, besides directly selling it to Kate will be unlocked for your account after your first purchase of credits at the shop"...stated under section Game Help.
But what to doo if i cant do payings throught my visa electron card by paypal??? how can i get these credits?
I dont like the rule about the fraud. i think u should be able to sell a card or cards if u either buy credits or if u are in a certain level. maybe level 25.
They did it because if you could sell characters whenever you want you could make hundred acounts and sell all characters to one acount that you want to use. And of course there is $$$$$$