What is the average earnings due to the publicity in an application
What is the average Dollar per million impressions (montly) in an app?

I launched an Android entertainment application 7 months ago.
I based it in banner ads and currently I'm serving 250.000 daily impressions (and about 3000 clicks) with Admob. The daily earnings are about $80 and I think it is pretty low. Can you guide me about if that numbers are good or bad results? 

Should I look for other ad networks / revenue systems? Nice Ad platform suggestions are welcome :D
What is the average earnings due to the publicity in an application
===

What is the average Dollar per million impressions (montly) in an app?

I launched an Android entertainment application 7 months ago.
I based it in banner ads and currently I'm serving 250.000 daily impressions (and about 3000 clicks) with Admob. The daily earnings are about $80 and I think it is pretty low. Can you guide me about if that numbers are good or bad results? 

Should I look for other ad networks / revenue systems? Nice Ad platform suggestions are welcome :D