It really depends on what you are promoting. Niche, high priced products do well. I have a niche site that earns $80+ per sale averaging 30 sales per month. Ads

It really depends on what you are promoting. Niche, high priced products do well. I have a niche site that earns $80+ per sale averaging 30 sales per month. Adsense on that same site earns less than $200/mo.