Is it true that if you have more backlinks, you get a higher SERP? Also, if that was true, how much is it usually to hire a link builder for you? Sorry I know this is like the most basic question there is but I have to make sure since ive read some mixed opinions... Thanks!
the more backlinks you have the more weigth should have in the search engines, thus giving you better serp. Let say you have many links with anchor text "dog food" it should help your serp for the "dog food" keywords.
The quality and relevance of the site you have the backlink from are also important so it is better to aim at high PR sites that are relevant to your site!