Yesterday I was handed an old, out of focus print of a person who'd recently passed away and asked if I could do anything to fix it up. There was also conciderable age and fungus damage done to the image (thankfully it was mostly in the background and not on the subjects)

I spent about 3 quarters of an hour to retouch this, sharpen the subject while masking the background. (I was actually quite pleased with the results concidering the original state of the image)

Originally I was going to be doing this as a favour for the man who owns the shop that I get lunch at every day (he's a nice bloke) but now he's offered recompence for my time.

How much would you charge for this service?