It depends to the bounty campaign how much they give the reward, the signature campaign it depends to your rank, the high rank gives a high reward and the social media campaign gives low reward, but at least it's a good income.
it is not about the reward you can get it is about on how many campaign you are involved in because for me it is natural for the bounty to have a lot of participants specially the social media campaign. If you join a bounty campaign with 2 or more bounty you are a bounty hunter.
I agree, a gift hunter does not expect much in a prize campaign, but they will collect prizes from many bounty programs to get a more rewarding reward score. If you only choose one prize then you will be disappointed with the results you will get especially if you just follow the bounty of social media that obviously has many followers.