I got into photography by shooting landscapes. I realized I did not bring in that much trying to sell them. I have been doing sportsmates and portraits for years now(18) and it has been good. Last year a restaurant chain came to town and contacted me for local images to hang and do a wall mural. I didn't know what to charge and thought it could be free advertising if they would put my name on it. They agreed and I have around 20 poster prints and a wall mural displayed. Then after a month they sent me a check for $250.00, which was a nice surprise. Ok, that was the set up for my question. I have a local bank chain that called me and they are doing a remodel. They are pretty much asking for the same thing. I know the make up of determining a price for prints and time but struggle with the price of a old image file that has sat on a external hard drive for a few years now. Thoughts?