3. If the team offering the bounty hunters to pay a small amount for the bounty hunters to process the rewards then pretty sure they are scam. They just trying to scam even the bounty hunters.
I've never seen anything like this but if you encountered one that must have been difficult for him to pursue you, since the main reason you want to join bounty is to earn for free if you're willing to let go of any resources you currently have I think you'd rather invest or trade.