Hmmm...it depends if you really love to get him and you have a concrete plan in mind, i.e. taking into consideration your resources, bp, server metas, etc. So, only you can answer if he is worth to you or not. I do not know the exact cost but personally, i can attest to the fact that his price range somehow is at least 20k or more depending on RNG for 80 frags as I got him recently in konoha tree too. Do not believe those people who says he is *t. He has his own areas in game to shine and to fall and thats natural. But as of the moment, I enjoy using him, Pvp, DB and TI and he makes great results. So you decide it all for yourself.

Your 12k for 55 frags maybe short. But i wish you luck my man. He is fun to use. Just give love to that Oji-san.