It seems to be bot for me.
Many people are using this way . I, too , is a way to rank effective video . You upload videos and to the " unlisted " and then proceed to buy at a reputable views , I only know the present and use 1 service . The rest were not effective . When purchasing a sufficient number of views , the new "public " video . Depending on the content and keywords you can calculate the number of views should buy . Usually ranges from 1-10k views is sufficient.