Why SEO
Surveys show that over 85% of internet users find new Web sites by using search engines. Other surveys show that after email, search engines are the most popular activity on the web.
Very Qualified Prospects
Traffic you receive from search engines is already targeted. Visitors arriving at your site from search engines have entered a keyword relevant to your site, so they are already interested in your product or service. This is the best source of potential customers you can have.
This is the best way
Search engines are the number one way users find new sites. Surveys show that over 85% of users rely on search engines to locate information on the Web. If you optimize your site to do well on the engines, then register your site with search engines, you should see increased traffic to your site.
Extremely Affordable
Search engines are free to users and users know where and how to use them. One of the first things a novice to the Internet learns is how to use Yahoo (actually Yahoo is a directory, but we'll discuss the difference later).
The way forward for you
Understand that not All SEO Companies are the Same
You must understand that there is a huge gap between the best-performing SEO companies and the average ones. Check the people behind the company. Do they have a stake in their lives or are just on the journey where they could switch to any other business quickly.
Investment or Expense?
You must appreciate that terms like "expensive" and "inexpensive" don't apply to investments which can be classified as "profitable" or "not profitable", depending on whether the ROI is positive or negative. As a sharp businessman you know that $2,000 in SEO fees are not "too much" if you make $10,000 in return. Its an investment and not an expense.

