As I spent over 1000$ on Facebook Ad Campaigns, I think I'm a little experienced in working with this tool. During my experience this tool changed it rules several times and as i'm working with it, i need to follow them. From this experience i can share with you some conclusions:
1. What is your main goal? Likes or Sales?
The price for Ads evolves depending on a country's economy. (ex: in US 1 Page Like will cost you an average 0,5$, the same Ad in India will cost you 0,05$) Ask yourself what should this likes do after you gain them? Buy your product (read the 5'th point) or like the content you Post?
2. This is not a place for Perfectionists
It doesn't matter how well you target your Audience, there will be at