Benefits of SEO
Long term visibility
Banner ads or paid search engine placement works for a while but once the market budget is depleted, the site disappears. Also consumers are often more likely to purchase from a site ranked high in the search engine results rather than from a paid advertisement.
Familiarity with the company
A highly ranked website means more people see the name of the company and become familiar with the company and its products, even if they haven't made a purchase. Surveys show that consumers are twice as likely to recognize businesses ranked in the top three in search engine results than those appearing in banner ads.
Affordability
In comparison to pay per click or banner ads, which cost between $2500 to $35000 a month, an SEO plan costs much less. SEO provides a higher ROI for most companies than any other advertising medium.