If you mean selling them all at once, you can't. I also fail to see why would you want to do that.
The secret. Kate holds the secret.
Thanks Nomi Ld for letting me know it doesn't exist. I request Urban Rivals to Implement this feature in My Collection Pro.
To buy out all the uncommons and rares he can, sell to kate, thus trolling players by reducing supply?
Either that or he just wants a lot of tickets
I don't like selling them to kate because she gives you so little clintz and you can get so much more selling them in the market
Some players can't sell publicly (UR restricts market if you haven't purchased creds/done free offers), and have several doubles that they have no use for.