ucena

1. blackmail
   To nije dogovor, to je obična ucena! — That's not a deal, that's plain blackmail!
   Nećemo podleći nikakvoj uceni. — We won't give in to any blackmail.
2. (with raspisati) bounty; price on someone's head
   Za njegovu glavu raspisana je visoka ucena. — A large bounty has been put on his head.

A common phrase is emotivna ucena, emotional blackmail.