A forum signature campaign pays around $ 1,500 a month.
You need to be a trader between Paypal-BTC and trade on HitBTC with some free tokens to get around 1000
You can achieve this amount, but you need to wait about a year and it will succeed.
other 500 dollar you can earn it from trenting your avatar and selling some cards
Wow! $1500/month, what kind of signature campaign you are talking about here? Even the sure thing, btc paying campaign, you will be lucky if you will participate in a campaign that will give you $50/week and most of the time, you should be Hero or Leg. For alt paying campaigns, I don't think you can get that amount every month as most of them, the payment is delayed and you have no assurance when will it hit in the exchanges.