You can buy dislikes too. It is unrealistic for any video to have only likes and not dislikes. Even teasers or trailers of celebrated summer blockbusters and the most informative videos get a few dislikes. If your video clocks a few thousand likes, it is practical to have a few dislikes so people do not doubt the unanimous thumbs-up from viewers. You can also buy youtube subscribers for your YouTube video from PopularityBazaar.