Why is SEO so expensive?

[satera]

If you cannot afford a seo then you can start learning seo and apply on your site then it will be very good to you and your site where as time matters because spending lots of time like dedicating your complete time in learning and applying may not work always that is why people will choose seo professionals and the term expensive will only suits to the ethical and professionals who has already proved and in a race where no one can be there this is why some professionals coast may be differ according to their standards. and if you want instant traffic then you can go with ppc like programs other wise it is always a good thing to practice seo strategies.