Is it true that I can buy backlinks?
The answer is definitely NO!
Purchasing backlinks is a significant violation of Google's webmaster guidelines and may result in penalties for your website. The guidelines clearly state that the following backlinks are examples of those that may negatively affect a website's ranking in search results:
"Buying or selling links that pass PageRank. This includes exchanging money for links, or posts that contain links; exchanging goods or services for links; or sending someone a “free” product in exchange for them writing about it and including a link."
Backlinks should never be bought, but only earned.