Teach - 5,096,000,000 (*I think he has to break the 5bil threshold)
Buggy - 3,015,000,000 (*retarded if he has a lower bounty than Kidd or Law)
Luffy - 3,000,000,000
Kidd - 3,000,000,000
Law - 3,000,000,000
Shiryu - 2,400,000,000
Mihawk - 2,389,000,000
*Can't imagine he'd have a bounty...