Hypothetical pricing advice

[TomB]

Hi everyone, I'm currently putting together a hypothetical business plan for some MSc coursework and was after some advice on what you professional lot would advise as a ballpark figure to charge for additional premise/product photography for a business whom you were constructing a website for.

The site building would be priced separately, but I'm unsure how to structure prices for the accompanying optional photography.

Any advice appreciated :)