moltar - 7:58 pm on May 11, 2005 (gmt 0)
Yes it's pretty general. Now you need to work on numbers. Now that we know the industry, we'll do some research.
Note all of the above sources are not nearly percised. The numbers can be way off. It should just give you a rough idea.
Now take those numbers and display them nicely to the customer. Talk about conversion rates. For exampe, if 3% of visitors buy from the site and an average purchase is $100, then the owner gets XYZ in sales per month. How fast will the owner recuperate the cost of the website.
Show them the dollar signs. Tell them how you can leverage their business.