First of all, let’s try to clarify what is the website audit and what for we need it. A lot of webmasters do not conduct preliminary audit. They just buy links and wait for the website rising in Google. Very often they wait in vain as they have paid for a dead horse.
The point is that before conduction search engine optimization it is necessary to estimate the potential of the own website as well as the potential of the competitors’ websites (internal and external audit). It is very important to know which key search terms should or should not be used for optimization. It is a wiser approach to the website SEO.
As both audit and SEO suppose strictly individual approach, the value of such services is calculated individually.