Taking advantage of Facebook advertising
You can use Facebook advertising to draw new customers to your page. Advertising fee on Facebook vary depending on the kind of ads used and how long you plan on running it.
You have plenty of control on who you want to see your ads. So you can pick a target audience by determining the gender, age, occupation, geographic location, keywords used and more.
I have noticed from experience that using Facebook ads for direct sales are very ineffective. I find it more rewarding to use my ads to build my audience and then using great content to make sales.
So my ads generally inform my audience about something they need help with. Once I have established a relationship with them, I then move to the sales part where I use my product or service to solve their problem.
So it's a win win situation.