Are you in need of SEO assistance or not.  Is your online business failing due to market shifts or a SEO issue?  I think that id your product is poorly designed and not in demand the best SEO work will not help.  If you have a bad business don’t expect the money spent on search engine optimization to pay off.  If you have a hot item for sale and just fail to have the needed hits on your site to get business levels up then a SEO tech can help.  This recent post on facebook will give you a better idea of what to expect from your SEO investment.