World Vital Records did not have anything that I could not find at ancestry or free on my own. In fact, it does list items found at popular free sites such as find-a-grave and google books. I do receive emails offering a bundle for membership with genealogy bank (newspapers) and that may be a better deal. I find newspapers are a great source for info if you are searching in the 1800s and 1900s.
Other people may have different experiences with WVR.