Several campaigns pay 0.05 BTC a month for both members and full members. BitDice does 0.05 per two weeks for full members.

If you're looking to buy an account just to profit from a signature campaign you can break even in just two months with the current price (or even less). But still if this price doesn't look right to you, I'm open to offers by PM. I wonder how many times I'll have to say that.