The amount of money you want to spend on an advertisement is completely up to you. If you only want to reach a few hundred people then you only need to spend a few dollars. This flexibility allows you to test multiple different ads at once to see which one works best. Then you can go in and add more money to the successful one and stop the others.
Facebook advertising has many benefits besides just being low-cost. Facebook provides very easy to follow reports that track how your advertisement is doing. It gives you information such as ad reach, total impressions and website clicks. Facebook also allows you to alter the ad if you aren't getting sufficient results.
The best part about Facebook advertising is how specific you can get with the demographics.You have the ability to narrow in on only the people you want to reach. It allows you to manipulate categories such as education, job title, income and relationship status. Facebook also lets you narrow down your search by selecting different kinds of behaviors and interests of the people that you want to reach. All of these different options all you to advertise directly to your ideal customers. That is something that very few advertising platforms offer.
So, now you know why most of the Facebook ads you see match up with one of your interests. And now that you know how it works, you can start doing it for your business.