If you have a huge website with thousands of pages

 Seo is expensive. Providers spend on staff . Content If you have a huge and sometimes external links (linkbuilding) . When a customer's monthly retention is low. The provider cannot hire top staff or can buy external links on blogs. Portals and abandoned websites on the internet. Too high: u$10.000/month or more the most expensive agencies often have many reasons to justify the high price. Maybe they are the best at what they do. Or maybe they...