The SEO rate is such a varied value that it’s almost impossible to give a set number. For example, some small businesses looking for local SEO in a niche without too much competition could end up paying hundreds a month.
On the other hand, a big company will have to take SEO to another level, yet it may already be seen as an authority in its industry or field. Therefore, it could already be in a leading position in search engines result pages.
Simply put, the rate varies based on your business, industry, needs and goals in the long run.