Another great idea is trading links with other sites. You don’t have to spend a cent. All you have to do is reach an agreement with another webmaster.  This works well when both sites complement each other.  For instance, you sell nutritional supplements and agree to exchange links with the webmaster of a site that markets exercise equipment.

Try writing articles that will provide tips and guides to other aficionados. Articles can remain online for years, leaving a form of advertising that costs nothing and persists.  Many sites offer free submission and posting of your articles.

Write relevant and informational content for your site. Use keywords in your content to help search engines find your site for visitors.  With the right keywords, you could get high rankings in search engine results without the costs. 

Provide some small update on a regular basis to give repeat visitors new interest in your web site.  You might have a “top five articles” list, or a weekly “featured product.”