Upload & Sell: Off
You will need to find out the following before you can price any image:
Rights managed basis
Do they want it for website use?
Print use including brochures, annual reports etc?
If website, how long - one week one month, one year, two years
Size in pixels if website?
Exclusive use vs non-exclusive - exclusive is VERY expensive
Royalty free basis
This is based on the size they require. I never license royalty free because it gives them the right more or less to use the image how they like.
If you go to my e-commerce site, here and click on any image, then Buy License, you will find a drop down pricing box. Before you can do this, you need to find out the above (Rights managed).
PS Whatever you do, do not sell yourself short. You have a unique image and they want it!