Your payback is actually the total amount of money earned from your investment in your company. Investment relates to the amount of resources put into generating the given payback.
You should run ROI calculations on both monthly and yearly timelines.
dale wrote:Are you looking at ROI for SEO? It is usually way higher then conventional advertising and marketing methods.
well not actually because payed SEO is very much expensive, I just wanted to have idea and inputs on the organic side of SEO, where it is free but will take a lot longer to rank in the pages in google, yahoo and msn
It's difficult to find legitimate paid services for SEO. Many of them are too spam-like or use other shady tactics. The tried and true ways to improve your page ranks on search engines are:
-offer relevant content
-keep accessibility in mind (eg: useful link text, make sure the site is readable in Lynx, etc)
-do not change urls and if you do, be sure to use proper redirection
-have your site linked to from other reputable sites
You can check out Jill Whalen's forum http://www.highrankings.com It has a lot of useful information on SEO.
As for hiring an SEO, check out who are top five high-ranking SEOs in your city. If they can rank high for their own website then probably they can do it for you ! You get local support too.