They are on file in Richmond, if you are related to the person.
You can also access death record certificate at the funeral homes, if you are a blood relative of the person deceased. I got my grandfather's this way.
Some will also try and sell marriage licenses and other documents as well. I know I checked the marriage licenses, I have from the 1800's and some are no longer available.
The ones from Richmond , some do not contain the information, the original does.
They also have a birt/death record of some natives of Buchanan County at the Courthouse. I found my grandmother's orginal birth certificate, this way.