SEO Pricing Model - how much should you charge/pay? 16th January 2012 11:24 AM
SEOmoz ran a Worldwide survey of SEO Comapnies to get idea of how pricing models vary, and give an idea of what people are charging.
Interesting stuff!

SEO Pricing: 600+ Agencies Share Costs of Services & Pricing Models | SEOmoz
Interesting stuff!

SEO Pricing: 600+ Agencies Share Costs of Services & Pricing Models | SEOmoz