SEO wins hands down over other types of online marketing because it has a much greater potential return on your investment. Other types of advertising can generate instant traffic, but this does not guarantee your website will prove to be an asset. Because the minute you stop pumping into pay per click (PPC) campaigns, traffic will seize up and sales will come to an abrupt stop. However, with SEO each and every first page ranking you achieve increases the asset value of your website
Even if you completely stop investing in SEO these rankings will persist for some time. If for whatever reason you wanted to sell your business, the worth of the organic traffic your site generates can be quantified with reference to cost per click (CPC) and search volume data.