I would not pay for such a thing myself. There are more and more commercials tempting people to send in their DNA sample to find their ancestry. But there's just too much fiction involved to cause me to go that route. I know my background. I don't require a DNA test.
Also, I know someone now retired from the FBI. The DNA Database that is active in America would also preclude my interest in patronizing those commercial sites and paying to share my DNA sample. Federal DNA Database
I looked for information when those commercials started to expand with different companies marketing offers to trace family trees.
DNA Fact or Science Fiction? 6 Genetic Genealogy Myths
Myth 2: A DNA test can pinpoint precisely where your ancestors lived or which tribe they belonged to.
If your ancestors and their offspring had stayed in one geographic region and never allowed outsiders to enter, it would be relatively easy to distinguish their DNA (and yours) from the DNA of people living in other regions. Over time, all of the inhabitants of your region would come to share specific genetic mutations (usually harmless changes in DNA), which would identify them as a distinct population, the same way a surname identifies members of a family.
But our ancestors didn’t stay in one place. For thousands of years, humans have moved about, leaving their genetic imprints wherever they procreate and making it increasingly difficult for geneticists to distinguish one region’s population from another’s.
Scientists can make inferences about your ancestry based on trends among populations, but they can’t say for sure that your ancestors lived in a specific country, much less a specific town.