13. An apparatus for valuing services for search engine optimization (SEO) of a campaign term, the apparatus comprising: means for retrieving search query volume information for the campaign term; means for determining a first probability that a search query for the campaign term will result in a referral from a search engine; means for determining a plurality of second probabilities, wherein the second probabilities are each associated with one or more particular positions in a search engine results page; means for generating an organic price for each of the one of more particular positions based on the search query volume information, the first probability, a second probability for a particular position, and a monetary value for the particular position; and means for generating a value of the SEO services for the campaign term based on the organic prices for the one of more particular positions.
13. An apparatus for valuing services for search engine optimization (SEO) of a campaign term, the apparatus comprising: means for retrieving search query volume information for the campaign term; means for determining a first probability that a search query for the campaign term will result in a referral from a search engine; means for determining a plurality of second probabilities, wherein the second probabilities are each associated with one or more particular positions in a search engine results page; means for generating an organic price for each of the one of more particular positions based on the search query volume information, the first probability, a second probability for a particular position, and a monetary value for the particular position; and means for generating a value of the SEO services for the campaign term based on the organic prices for the one of more particular positions. 16. The apparatus of claim 13 , wherein the first probability and each of the plurality of second probabilities correspond to computed fractions based on actual data.