Have you exhausted all resources for locating the document you need? Is a trip to the land of your ancestors out of the question? Has their national or regional archive not yet created an easy-to-use website for orderng records?
Genlighten is a website for obtaining documents from remote repositories. It connects you with local researchers who can find what you need.
When you search their record offerings, the kinds of documents and the cost of lookups are clearly labeled. Credentials and ratings are available for the researchers you hire. Set up a free account in order to purchase records.