That's truly impossible though. We ALL have a price that would get us off the plane. I mean, for the amount of money that Bill Gates or Warren Buffett have, is there ANYONE that wouldn't do it? Some people will have absurdly high amounts of money that would be required to get them off the plane. That's fine, that's an indication that they really don't want to be booted. And in any large group of people, some people's offers will be very reasonable, in the few thousand dollar range at most, and much more likely, a few people will say they'll get off the plane for a few hundred.

There's no need for IDB. If the flight is going and needs to leave some people behind, you can get enough volunteers by asking people what their price is and picking the lowest ones. Because we all will get off the plane for some price.