Yes paid link useful in website ranking. If you buy backlinks, you can quickly get high rankings for your website on Google. Buying or selling links that pass PageRank is in violation of Google's Webmaster Guidelines and can negatively impact a site's ranking in search results.
Google doesn’t like paid links and will penalize you for buying or selling links.
Unfortunately, Google will completely remove your website from the search results as soon as they find out that you use these methods