If you can't sell on the market, then the clintz pack. If you get a character pack and end up with cards you don't need, you're stuck with them. Selling them to kate gets you next to nothing. With the clintz pack, you get cash and use it to buy exactly the cards you want.
Urban Rivals | Free Online Manga Trading Card Game | TCG | MMO
The Urban Rivals team is made by lovers of all kind of Collectibles Cards Games and Trading Cards Games like: Magic the Gathering, Dominion, Vampire, Yu-Gi-Oh!, Pokemon, Wakfu TCG, Assassin Creed Recollection, Shadow Era, Kard Kombat and Might & Magic Duel of Champions.