So far as I know, essentially all grey market vulnerability sales are tranched, which is an important consideration when comparing bounty payouts to the grey market.
The report to the manufacturer with the remark that there is a existing weaponized exploit will lead to a much faster fix.
And why you are so sure that there was no weaponized exploit out there before?
So you are okay with submitting the exploit on a silver platter to people who murder dissidents because “you can’t be so sure that there wasn’t an existing weaponized exploit”?