I am not sure how the system should work, but I think giving people the ability to spend gold to remove a bounty completely might be a good idea.
So, I am just gonna put something out.
The person who is wanted can spend 25% of the total Unclaimed Bounty gc at hand at the time to remove it completely (Paid to game), 80% of the Unclaimed Bounty will return to the person who made the bounty at the time it is removed. (Both money is lost to the game)
Approved with a 175% buyout cost