Thats a good question and one that i hear often in my
website design Businesss and i'm afraid to say there is no definitive answer ,it depends on so many things like
what are selling or promoting?
To whom?
Is it a niche website or mainstream
How is your website designed,ie is it keyword specific
Are the images searchable?
how are your metatags set?
is it content rich?
How much traffic does it get?
how long do your visitors stay?
where do they exit from?
How are you marketing it?
is it search engine optimised?
these are just a few questions that need addressing first.
One of my clients who is a palmist wanted a website to sell his handbooks and teaching courses and advertise his events .
so this was built at
John's palmistry site which now has been live for 3 months and is just beginning to start earning by selling his handbooks.
the reason being that he now gets traffic from search engines,google images.
and links from other astrology websites.
this has been designed to do this and it is now paying off.
this can only be achieved by carefully working with my client to build the site he needs.
If you would like help with yours .please let me know
Mike
Internet Business Consultant