Simply because that bounty pool is small, but the bounty hunter realizes that the project has a lot of potential when going to exchange. Like the GowithMi project that I have seen before, pool bounty is very low. But now its price is x10 compared to the IEO price
Has the bounty been paid? if you have paid it will certainly be a good price. but if not, then the bounty hunter won't feel that high price. we have seen this several times, because when the distribution is done the price will go down immediately, even before the distribution is done sometimes the price has gone down first.
We've all seen that a lot of times before. Bounties offering big quantities of token that end up not even getting listed. Or even if they do, they value just over a dollar or even less. I've had bounties from 2 years ago that's stuck in my eth wallet until now. I think project that offer a believable amount in tokens have a bigger chance to make a bounty hunter's effort worth it.