Search Engine Optimization Services: SEO Pricing. The cost of SEO services varies depending on what is included. Most SEO projects in 2018 cost between $350-$2,000. Keysearch – An easy to use web based keyword research tool with in-depth competition analysis, keyword difficulty checker, keyword suggestions and so much more! Because they did that, I just gave the highest-ranking competition of theirs for those keyword phrases. This method serves a few…