Hi all, I'd appreciate any professional advice as I'm transitioning from solely selling my work as art and for hire photoshoots to offering photos for marketing as well. I have a personal relationship with a client who asked me to take a few photos at their event. I was not hired as the photographer, but didn't mind taking photos on my iPhone while they had to socialize and run the event. One of the photos taken was of a collector car their company owns with a stunning backdrop of mountains and sunset. When the client saw this photo they fell in love with it and said they want to use it for all of their marketing materials next year which would mean print ads, posters, digital ads and their website. I mentioned to them my licensing fee for art for non-exclusive rights is $100/print (or ad). That I anticipated they would probably want more than 50 prints so I'd charge a flat fee of $5,000. The client was really put out at this number saying "we made the art together" because the photo is of their company's car at their event and without it I wouldn't have the photo. That I should try selling it to someone else and see how much I can get and I'm trying to hold him hostage. I said this isn't personal it's from my research what I believe to be fair and regardless of who owns what is in the photo, I own the photo. I mentioned $5,000 feels like a fair number to me, but if they feel it's too much to come back with a number they feel is fair and we can go from there. I'm not sure if I'm completely off on my prices or spot on and would appreciate anyone who has experience in dealing with selling photos for marketing or in a similar scope for input. Thank you!!