User blog comment:Pandawarrior/Mutiny on the Bounty/@comment-24568337-20151208090545

Agreed. Luffy's bounty increase from 300 to 400 was caused by; Defeating Moriah, hitting a Tenryuubito, wrecking havoc in Impel Down and Marineford, being Dragon's son and coming back to Marineford to ring the bell. After all these events the fact that his bounty increased by a 100 made me think that it gets super hard to increase your bounty after some threshold and even Dragon has something like at most 800 on his head. For Jack to have a billion doesn't makes sense after some point just sinking marine ships and destroying towns shouldnt change his bounty anymore. If this 1 billion bounty is real, I think Oda showed some inconsistency