The U.S., Canada, and United Kingdom will cost you the most to advertise to in Facebook. So if you are on a shoestring budget and since Amp Your Income is a global business, I would advise you to target other low cost countries.
I have created a list of countries that are very low to advertise to on Facebook. I am talking between a penny or two a click sometimes lower depending on how you structure your ad. The following countries are included on the list: