Search Engines (I mean Google mainly) are the best source of generating endless traffic, it is like a goldmine getting you lots of gold every day. Not just traffic, but the traffic of highest quality. Those sites which rank on 1st page of Google or mainly on top 3 ranks of Google doesn’t actually need to invest much in other form of advertising and business generation.
I am not speaking big words, but I personally have a website that has brought sales of over $148,500 (1 Cr.+ INR) so far without spending even a single rupee on advertising and other marketing forms. Wanna know how? Just SEO w/ Great Content.
Doesn’t matter if you run a real estate business or a clothing manufacturing business, you can always generate leads and sales for your business using SEO. Once your website is optimized for SEO, you don’t need to contantly invest money, you can just make it a small little regular investment. You can also enjoy completely free business for some months or years, but I won’t suggest you to stop on getting ahead of your competitors. Because, if you are not working, your competitors are probably trying to take over you! For Sure!