Wild hair brain thought here that I'm not finding much on.
So the idea is this: there are international bounties for heinous individuals that multiple people may have an interest in capturing, be they the leaders of drug cartels, fugitive Nazis, terrorist leaders, or simply intelligence agents. I got to looking through the bounties and got to thinking that the prices offered for "information leading to the identification or location of any person" seemed a bit on the low side. I mean, Bin Laden's reward was only 25 million when he was killed, the US military alone pisses that away more than that on an hourly basis.
This got me to thinking, what if a group was able to capture someone who was internationally wanted and then... auctioned them off to the highest bidder?
I mean, on one hand, this could probably be regarded as human trafficking, but outside that... I have no idea.
Note: --This is assuming this group is able to maintain its anonymity and operations during the auction and transaction process without groups X, Y, or Z knocking down their door rather than get into a potential bidding war. --Also, for the sake of the argument, let's say it is someone of international renown that is just as wanted and famous as Bin Laden. --As a method of protecting themselves from attack the auction may be released.