Search engine optimisation is the natural way to gain ranking on Google / Search Engines, and is one of the most cost effective forms of advertising, page rank is very important in obtaining deserved results.

But not for just any old search. It's not enough to appear first in the results when someone searches for your business name, or for some obscure specific phrase. You need to rank highly for the words that the majority of your prospects are actually Googling.
And we're talking about the natural (or organic) results here, not the paid listings like Google Ads (that's Search Engine Marketing (SEM)), not search engine optimisation (SEO). Roughly five times as many people look at the natural results as look at the paid listings.
Search engine optimisation (SEO) incorporates:
Your competitors are probably already doing it, and reducing your market share in the process. If not, Happy Days!! You’ll be able to get a headstart on the competition.
SEO Services are generally quite expensive anyway, but the costs are increasing all the time, as more of your competitors move toward SEO it gets harder to achieve natural high rankings and will require more and more time put into achieving & maintaining your ranking. So the sooner you get into it the better! However, when it's done right and you're achieving results sales will follow (Phew!)
Right now, search engine optimisation (SEO) is still vastly undervalued by most businesses. Despite the huge revenues earned online (estimated by Forrester Research to reach $316 billion in 2010). And despite the fact that 87% of people use a search engine when they’re ready to buy. Most businesses still spend a lot less on search engine optimisation (SEO) than on other forms of promotion. So it’s still comparatively easy to reach the top of the search engines. Certainly a lot easier than it will be this time next year.
It’s also a lot easier to maintain a high ranking than to get a high ranking in the first place. Once you’ve reached the top, you only have to do enough to stay there. So your SEO investment should decline and sit at a comfortable level.