What's it Worth - Pricing your stock photo

Out of the blue a business contacts you wanting to use one of your pics. They have seen it at your web site, on your blog or at an exhibition and are requesting availability and price. After the warm glow wears off how do work out what it is worth? What can you ask for and still get the sale? But you don't want to give it away, do you? Firstly they are not buying a print. They are requesting the right to use your pic a multiple number of times in a way that will enhance their business and their sales. They will handle the printing side of things you are just providing the image. So the question really is what is it worth to them? To determine this you need more information. What is its intended use: Advertising or editorial? Specific use: Newspaper & magazine ads, packaging, point of sale, brochures etc for Advertising (remember if it is for advertising you will need model releases for any recognizable people); Books, newspaper or magazine story illustration, news letters etc for Editorial. Size and Placement: Full page,