it depend the traffic and the interesting of the ads. Because there are various source to get income from hubpages. Let me say, from Adsense, ebay, kontera. But from my experience my top earner from Adsense is $5 a day. It depend the traffic. Even sometimes I get 250 visitor with zero earning. It can not predicted. But never give up and show your talented and your passion in writing. I believe you are good writer, always give the best to others by giving useful information.
Why I answer this question like this . Because I got my first payment from Adsense last month. It give me spirit in writing. thank you.