# Any way to award a second +100 bounty to a second answer to the same question?

I've awarded a +100 bounty to this answer. but there is a second answer that uses a different approach to the derivation that I find equally helpful, and I would like to award a second +100. When I click the start a bounty button, the lowest available number is +200.

A work-around would be to "borrow" some, but I'm asking here if there is a way within the stackexchange system to do this.

Further, is there an existing rationale for blocking any value below 200, or is it just a bufeature? (a bug retroactively defined as a feature)?