How much does radiant photo cost?

Excuse me, could you please clarify the specifics of your inquiry? Are you referring to the cost of a radiant photograph, perhaps a specialized image taken with a high-intensity light source for a particular purpose? Or is it a particular product or service related to photography that utilizes radiant energy or lighting in some way? Without further context, it's difficult to provide an accurate estimate of the cost, as it can vary significantly depending on the specific application, quality, and features of the product or service in question. Could you please elaborate on your needs or provide more details about what you're inquiring about?