When ever a company implements search engine optimisation it can start off from a thousand to a few thousand pounds, which normally throws companies off the idea of having SEO implemented on their website. Not every company understands that eventually search engine optimisation will eventually pay for itself once done correctly.
The purpose of SEO is to help create more traffic for a website by gaining high positions in search engine result pages for chosen keywords and phrases. By having more traffic to a website there is more chance of generating sales, which will eventually provide more money than the search engine optimisation work costed. SEO can be expensive but this is typically due to the amount of work put in to get websites to page 1 by having to generate search engine friendly content, linking and other methods.
Just because a search engine optimisation company is cheap doesn’t mean it’s worth the money. Make sure you do research in to a number of SEO companies before you make a decision. Look at how successful they are, what websites they are already optimising, what they are charging in comparison to others and how well they are doing themselves in terms of where they are in search engine result pages.