The price of SEO services is a question most companies can not find an answer to. It could either be because an SEO Company is secretive of their pricing model or the price is calculated based on the project/client and their requirements. Thankfully, folks at AYTM ran a survey on over 600 SEO Companies and made a great infographic representing the results.
Although the survey data is country based, prices may vary locally. For example, WebFly a Philadelphia SEO company most likely will have a different pricing structure than say a company out of Los Angeles. Make sure to speak to a few firms before making your decision.
Happy ranking for 2012.
Infographic provided by AYTM