All we need to know is the software you're using and what you want the image to contain. In Window's applications we often supply images in the high-resolution .jpeg format, as they print crisp at any size. If you have a postscript printer, one that prints at 600dpi, we can supply either a .tif or .eps formatted image. We do create them, but only client-side image maps. Frankly, they work great and are easy to edit.
Price is determined by the amount of work required.
If you want an image of Africa with every country image mapped, the price will be higher than a simple image with only three hot-spots. Our finished work includes the image and HTML coordinate codes. We include instructions on how to place that code on the applicable page.