I'd like to say if Smoothie can get 900 thousand or whatever from "doing nothing/being useless", then Boas should be much higher but this is Oda after all ofc. I wouldn't be surprised if Boa's bounty is lower than hers and I did fear it might be as well.
It's gotta be higher than Devon's though at least surely? And gotten a huge bump from her actions in regards to and her closeness with Luffy now and being disbanded from the WG and being hunted by the Marines now? Oda seems to be holding off giving them current bounties as he knew he was gonna abolish the Warlord system and thus he could give them newer, much higher bounties and hype them up?
I might be being too optimistic in that last part though.