When we create new website at that time to increase our website visibility SEO is necessary. Website designing, developing, promotions etc are important and necessary so i think SEO is much Expensive! What's your opinion?
SEO is not expensive but you need to be patience.SEO is a continuous process,you need to work in regular basis.
Total SEO is expensive but if you know about SEO than you need to hire freelancer for link building than you can hire a SEO worker in Cheap rate for link building.