Luffy: 5,000,000,000+; I can only see him getting one more bounty after Egghead and that's when Luffy's Pirate King, where I think it'll be 6,000,000,000+
Zoro: 2,000,000,000 - 2,400,000,000; Last bounty before fighting Mihawk most likely
Sanji: 1,500,000,000 - 1,900,000,000; His bounty will...