Where can small businesses go to obtain reliable data on their own market if they are inclined on expanding outside their domestic market's strategy? What would the process/cost of acquiring and collecting your own data?

I have included a couple quick starting points below (I have included the actual link for you to see where the information is generated):

CIA World Fact Book (https://www.cia.gov/library/publications/the-world-factbook/),

OECD -Organization for Economic Cooperation and Development (http://www.oecd.org/)