I think you are skeptical with the amount given. It has many factors why someone earns a small amount. First if you join a sig camp. that is already many who link at it of course many will also share the amounts. If you like to earn big, apply to large signature campaigns, they usually offers big amount. Secondly maybe because of their rank, as you can see the higher your rank is, the higher pay you will obtain. The same scenario if you are in the lower rank you also gets lower payment. It is just the same in one company, in you are starter or a fresh graduate, you will just start for a small amount and later because of hard work you will be promoted to higher rank.