This is the system intended to deter excessive PKing.
http://www.blackdeserttome.com/wiki/Karma
Much harsher than Archeage's crime points, not nearly as harsh as Eve's concordoken.
With hard work, a player could do enough "community service" pre-emptively to store up positive karma and get one free PK. Save up a max 300,000 karma . . . lose at least 210,000 karma for the single PK
I'm not certain whether karma is character-based or family-based. (Easy to check when I get home.)
If it is only character-based, then it would be a simple matter to keep one alt in the family just for carrying permanent negative karma, and escaping consequences on the rest of family.
If it is family-based, then I suspect there will be little to no significant PKing in BDO.