I visited the bounty topic too, and did not find details.
With only 300-coins fund for signature, it is probably very low payment rates for participants.
Additionally, with small fund, the campaign might not last for too long, within a month, I guess.
Now, you can check detail on the bounty thread

Jr. Member - 1 Coin per week
Member - 2 Coins per week
Full Member - 3 Coins per week
Sr Member - 5 Coins per week
Hero/Legendary - 7 Coins per week
1 coin = $1.5
Masternode sale will be live soon @o.4 btc
So a coin costs 0.0004 btc 1.5$ approx