Facebook is a social platform, if any product firm or travel agency or any business related people want to purchase facebook ads, i do not think that will work good for you. But if you have any social fan pages, or discussion fan pages or community fan pages, then facebook ads will work very good for you.
When you chose facebook ads, go for CPC, in that way you will get good click. and always go for high value initially, then after 2 days, check facebook ads cpc rate, and then lower cpc price to that, then after 2 days, check facebook cpc rate, then lower facebook ads cpc rate to that, in that way in a very low price you can get real facebook fans.