General

Questions about these kataras

http://tinypic.com/view.php?pic=20lesk&s=8#.U6ND0_ldU4I
Hey guys so i just bought this Raven Horn Shadow Katara for 2.8B so can you guys tell me if it was worth it and how much this katara is worth?
Also my Tsukuyomi Sword of Sorrow (jap katara) is on the left, how much do you guys think I can get for that katara?
Last question: Which katara do you think i should use (keeping in mind how much i can make for the other one that i sell)

Thanks guys!