Digital BW, The Print

Hi All, 

I know this is terribly off topic so if it's completely inappropriate to post this question I 
apologize. But there are so many photographers on this forum shooting for a variety of 
purposes I'm hoping a few of you might share your opinion. I have googled and not come up 
with much.

I just finished a portrait commission and the client wants the files. My inclination is not to 
give them up at any price because I do not want inferior prints of my stuff floating around. 
How do you all feel about this issue and for those of you that do sell the files....how much?

Thanks,
Sarah