In my experience, FB charges about $25 to reach ap
Post# of 40989
For 500 bucks, we'll reach a half million views, not people, as they will repeatedly hit up users who've liked the page.
There are settings you can use to help FB identify who you are trying to reach. The advertiser will need to know who is target audience is and how to reach them.
It is important they target parents of teens, and NOT the teens themselves.