SEO is, after all, a very important marketing investment. Before we decide to invest on a channel, we have to answer two very basic questions: How much is it going to cost me? And What is the ROI of SEO campaigns? However, calculating both the cost of SEO and the generated ROI can be quite complicated. On the one hand, there can be many variable costs tied to content creation, link building, site optimization, and so on. On the other hand, the actual revenue generated from organic search engine—as the result of......

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