I have 3 websites that you can buy ads. They have good traffic and the ad price is $5.00 per month for every ad and you get one free text link to the same URL in another page. I optimize my sites regularly and I already have better stats this month.
So far, the September average visitors per day are as follows

http://www.englandattraction.com/ average 270+ visitors per day
http://www.franceattraction.com/ average 150+ visitors per day
http://www.egyptattraction.com/ average 180+ visitors per day