Here’s a situation I ran into recently that shows what SEO can be for a company:
Their market potential goes well into the millions of dollars of revenue every year. The amount of visitors they’ve lost is about 55k/m or 660k/year! And, their market is so big online that what they had before is tiny compared to what is possible.
These are no small value visitors. This is a national e-commerce site that sells many expensive items over $1,000. So, the value of a single sale is very high.
I’m also aware of a company that makes a whopping $70 million/year with 2 sites with just SEO. Great stuff. Can’t say I’m too surprised.